Malicious PDF — malware analysis report

Static analysis result for SHA-256 056ce89b3c65baca…

MALICIOUS

PDF

91.3 KB Created: 2021-07-05 06:48:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: a87ff3f2fd4541993f7b72fcd647d9a2 SHA-1: e4540a71dbd7b14a8790ef3bc7db3b34735e77e8 SHA-256: 056ce89b3c65baca808dda850f70cf0161047e9be75157a14272d61d0ab3384a
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged by multiple heuristics as malicious, including an ML classifier and a specific rule for advance-fee scam lures. It contains numerous links pointing to potentially compromised websites or disposable hosting, suggesting an attempt to distribute further malicious content or phish for information. The ClamAV detection further solidifies its malicious nature, classifying it as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9822

Heuristics 7

  • 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.
  • 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://akapacha.com/userfiles/file/dogafusiwarop.pdf
    • http://huichem.com/ckfinder/userfiles/files/sawodisanilejijew.pdf
    • http://2440027.ru/upload/file/pigapomugobubipaxup.pdf
    • http://geose.ru/userfiles/file/7273270592.pdf
    • https://leganordavigliana.it/uploads/file/juxuxufipurapusizolowuw.pdf
    • https://www.gml.de/wp-content/plugins/formcraft/file-upload/server/content/files/160bfd010a2792---kuterijozonojijivu.pdf
    • https://ajur.rest/uploads/userfiles/file/96642945076.pdf
    • http://henrycrawfordreunion.com/clients/1/19/1929e20d1ffebcad6d8b2a659e9c170d/File/95592618192.pdf
    • https://inchirieriavioane.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1607217a05d833---73060492298.pdf
    • https://rmdschoolandcollege.com/wp-content/plugins/super-forms/uploads/php/files/g7mndvjid70qcheab3pb6cm4t1/96714217886.pdf
    • https://mission4recruitment.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a10bd85f3b6---kumuletijadifinetisew.pdf
    • http://driver-jazda.pl/upload/file/biduzun.pdf
    • https://microfocus-realize2020mea.com/wp-content/plugins/super-forms/uploads/php/files/6832489804c3af2fc1dc66a197871a8e/44074214168.pdf
    • http://iamsoldierfit.com/wp-content/plugins/formcraft/file-upload/server/content/files/160af75c4771b4---nuzisetajukuwinog.pdf
    • https://egf.tw/test2/images/file/72400672412.pdf
    • http://inspirationallabels.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16086a9cb79daa---zigifitubikoxaten.pdf
    • http://www.aadhar-interior.com/userfiles/file/kimanekifakigetizoj.pdf
    • https://cbolean.com/wp-content/plugins/super-forms/uploads/php/files/hllknepgl7kqbp1vbsivi7rkm2/xatunamivemetufezuw.pdf
    • https://www.sgestrecho.es/wp-content/plugins/formcraft/file-upload/server/content/files/16076e0c784e94---83265005899.pdf
    • https://healthmatters.me/userfiles/file/xinasaxamisusezixavamo.pdf
    • https://evenimentecastel.ro/wp-content/plugins/super-forms/uploads/php/files/obksbpjceqr1mg9o8avq7k8ea0/mefopevozewepedabi.pdf
    • http://notariocprietoa.com/notaria/documentos/files/gakikiwesidufamowa.pdf
    • https://fonixkoncert.hu/upload/file/ferifujutifulomeraperob.pdf
    • http://www.sandzthabapanel.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1606d13dfd8095---20621738788.pdf
    • http://ximangsongthao.com/app/webroot/uploads/files/34320581825.pdf
    • http://christmaslandint.com/userfiles/85953265460.pdf
    • http://lyzebrno.cz/userfiles/file/saximapoli.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BkSY9tpko7c/uplcv?utm_term=the+mind+of+the+leader+pdf
    • 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_off0001038b.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x1038B 16792 bytes
font_01_sfnt_off00011b9d.bin
9d2c1694fbf56ccdb5a5bdbd7938784d345b6b212ecdd9c7e112546786875041
pdf-font-stream PDF embedded font (sfnt) at offset 0x11B9D 17368 bytes
font_02_sfnt_off00014811.bin
c268fded67d7997bf75bcfa9d9bef401dfb7aa7cd58a54cbed39679f4c702798
pdf-font-stream PDF embedded font (sfnt) at offset 0x14811 10560 bytes