Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b541eb260fc3f5c…

MALICIOUS

PDF

87.8 KB Created: 2021-07-19 18:16:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 200c81008d30539afa4fe67692fa2f21 SHA-1: 03c2060f16a5e395d5160fc6516952d648a5abdc SHA-256: 9b541eb260fc3f5cb9c288283f207ceedf123c046829df19212669b542e6359a
204 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample was flagged by ML classifiers and ClamAV as malicious, with high-confidence heuristics indicating it is an advance-fee scam lure. The document body is unreadable, but heuristics suggest it contains urgency and parcel delivery language. Numerous URLs were extracted, many pointing to potentially compromised websites or disposable hosting, suggesting a phishing or scam campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9835

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://eyetracking.pl/userfiles/file/xipunamudazoler.pdf
    • http://www.kmclogistics.com/wp-content/plugins/super-forms/uploads/php/files/9b2deb11a6d6f5b755b14743da511e0c/83637212652.pdf
    • http://hattrick-sports.com/wp-content/plugins/formcraft/file-upload/server/content/files/16071627e7f816---21241836791.pdf
    • https://dovolena-jiznicechy.cz/uploads/miluro.pdf
    • https://amitadevnani.com/userfiles/file/79382763722.pdf
    • http://packamate.com/userfiles/44507464848.pdf
    • https://www.drserapkagan.com/wp-content/plugins/super-forms/uploads/php/files/md0s1h39s1cv6r5fe50fu74ea2/guwevab.pdf
    • https://givemeit.ru/wp-content/plugins/super-forms/uploads/php/files/39b6983d7cdcb892340586596ffd8255/lofobasuk.pdf
    • https://facade-metal.ch/ckfinder/userfiles/files/lodumuzudoxukelevoni.pdf
    • https://mebelpozakazu.ru/wp-content/plugins/super-forms/uploads/php/files/f7f67f41f380f7e2beb5ea405e7d91bd/rojagalizidatedenis.pdf
    • http://sanitaerprofi.ch/fckeditor/editor/images/file/panojumit.pdf
    • http://www.ambredore.com/wp-content/plugins/formcraft/file-upload/server/content/files/160749735af66a---fodurenepelego.pdf
    • https://doitsolutions.co/wp-content/plugins/super-forms/uploads/php/files/9b8c6dfd34b31bcb1307046730afe1eb/24542991573.pdf
    • https://weddingitaly.jp/images/file/42377008210.pdf
    • https://bindazzled.com.au/wp-content/plugins/super-forms/uploads/php/files/b315b4dcb04a3b6ec845d70799f9503b/79473430856.pdf
    • https://sipsib.ru/wp-content/plugins/super-forms/uploads/php/files/bab61854d173749af1ad6e9109085f61/10457773175.pdf
    • http://oroblupiscine.it/userfiles/files/61323022862.pdf
    • http://pwr-tech.ru/userfiles/file/foledasulivodozobejudo.pdf
    • http://thepokewave.com/uploads/files/tiwesiniwabunudodonoxan.pdf
    • https://asigurareingermania.ro/wp-content/plugins/super-forms/uploads/php/files/a10i6u0vvbbaj3cusmhpoc6hv6/wufabojusukaviguwol.pdf
    • http://www.hkqi.com/wp-content/plugins/formcraft/file-upload/server/content/files/16098408a6840e---foluxise.pdf
    • http://donaldnathanlaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/gasafetusibag.pdf
    • https://arizonalightingsales.com/wp-content/plugins/super-forms/uploads/php/files/a9ac528e0344325ec6faf953ec02d6b7/sutupabobuponekozuxad.pdf
    • https://anzmrrn.org/wp-content/plugins/formcraft/file-upload/server/content/files/160bce4fa68d52---6994718172.pdf
    • https://masterok-kovka.ru/wp-content/plugins/super-forms/uploads/php/files/eab618e269e5e6c45d26d5fd9ef99e8f/32622115191.pdf
    • http://ecohost.ru/pics/images/file/87795371352.pdf
    • http://phuvuongcorp.com/luutru/files/67298164604.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/3vuEKuznOb8/uplcv?utm_term=martinelli+pes+2020
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f40b.bin
369b31349345527e15c1e6ecbcf34e8dba654387bb21dd58a3aaf8ae8291d3e0
pdf-font-stream PDF embedded font (sfnt) at offset 0xF40B 10360 bytes
font_01_sfnt_off00010b9c.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x10B9C 16792 bytes
font_02_sfnt_off000123ae.bin
1b9b4014f59d10e8f3c00c68dc0f39bb9bbb1807e49027df9675556ca63ee554
pdf-font-stream PDF embedded font (sfnt) at offset 0x123AE 17464 bytes