Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c6897248a92984b…

MALICIOUS

PDF

82.2 KB Created: 2021-09-17 17:33:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: faf49a76b133c9e0a1a85b18e062bd5e SHA-1: 388731791f71e5aec304fba1bb303e45f8346377 SHA-256: 1c6897248a92984b36314ac0c50901c576ff6f06540d342834afc36ab647890e
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many of which point to compromised WordPress upload directories or disposable hosting, indicating a link farm designed to redirect users. The presence of a ClamAV detection for 'Pdf.Phishing.Trojan' and ML classification further supports its malicious nature. While no scripts were explicitly extracted, the PDF structure and URL patterns suggest it's used to lure users to malicious sites, likely as part of a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9917

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://garglob.ru/uplcv?utm_term=play+store+beauty+plus+camera
    • https://pasarantogel2.com/contents/files/xiligipejugetet.pdf
    • http://heninrealty.com/userfiles/files/82583823702.pdf
    • http://healingtown.org/userData/board/file/polakopafexebuko.pdf
    • https://hcs1000.org/wp-content/plugins/super-forms/uploads/php/files/57e93a6d1f87ca07fc391ad151c4fc20/ziwudirebisuzexudog.pdf
    • http://afro-safari.com/upload/files/19554121287.pdf
    • http://jagatjyotischool.org/jagatjyotischool/userfiles/file/soxopupisuzak.pdf
    • https://eko-briketes.lv/userfiles/files/wofuduresigefaximibipevo.pdf
    • http://penetrat.ru/files/files/xazonefijisafotaw.pdf
    • http://leap-egypt.com/wp-content/plugins/formcraft/file-upload/server/content/files/16130ae80f0d12---37336569087.pdf
    • https://www.caesarstravel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613021d11e2cb---97706735989.pdf
    • http://babijie.com/upload_fck/file/2021-9-16/20210916040401514231.pdf
    • http://travelsi.ru/ckfinder/userfiles/files/45126905094.pdf
    • http://matonaklawfirm.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/jununulutokalekuviginixat.pdf
    • https://mondoaudio.it/img/uploaded/file/dinilafepipobafunuzum.pdf
    • https://digireg.nu/upload/dosozipibe.pdf
    • http://ageddfjtj.pretty-match.com/upload/files/31880553552.pdf
    • https://distriparkbotlek.nl/userfiles/files/80091419322.pdf
    • https://www.bouldersudbury.org/wp-content/plugins/formcraft/file-upload/server/content/files/161448779bd2aa---98879583863.pdf
    • https://californiaoptionsrealestate.com/wp-content/plugins/super-forms/uploads/php/files/203520030d8ec8fab8c37b9151f4ff0b/repovirukexizegexiti.pdf
    • https://rallstarawards.us/nbloom/fckuploads/file/gapilotazi.pdf
    • http://wingmanresearch.com/userfiles/files/robumebegoruji.pdf
    • https://www.hmgfinance.com/ckfinder/userfiles/files/98818420977.pdf
    • https://gullyracing.it/admin/ckfinder/userfiles/files/jawetepadip.pdf
    • http://www.armstrongre.com/files/files/44176754040.pdf
    • http://one9five.com/userfiles/files/mofokajasazun.pdf
    • https://navoloki.mebel18.com/uploads/files/sesuvugogif.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_off0000dd73.bin
2c2b042901742f080f746119b5732cc672e2c0561dc43baddc1775810e03d5ac
pdf-font-stream PDF embedded font (sfnt) at offset 0xDD73 17292 bytes
font_01_sfnt_off00010a08.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x10A08 16792 bytes
font_02_sfnt_off0001221f.bin
e65518f4e5ba683eeb5991c1163fee201c2f92d42eaad597cfca12493b25f8d2
pdf-font-stream PDF embedded font (sfnt) at offset 0x1221F 10696 bytes