Malicious PDF — malware analysis report

Static analysis result for SHA-256 f95b255c5fbae753…

MALICIOUS

PDF

86.9 KB Created: 2021-02-28 07:54:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 015c975fde19bca39364400363d357b1 SHA-1: 265dcd56c8b5906a624936551930e9bd5584f482 SHA-256: f95b255c5fbae753ec4f167b3eca386bc3bc21b2d5ef499d7feeec17e71a369d
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. It uses an urgency-based lure. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://resalured.ru/123?utm_term=technical+analysis+course+indian+stock+market PDF link annotation
    • https://cdn.sqhk.co/sarowojep/jdhDVjf/topesanuradunorawido.pdfIn PDF document text
    • https://gejizataki.weebly.com/uploads/1/3/3/9/133997606/b09d1301.pdfIn PDF document text
    • https://cdn.sqhk.co/padixemugex/gxRHJ1i/dog_bubbles_petsmart.pdfIn PDF document text
    • https://bafuselowazela.weebly.com/uploads/1/3/5/3/135318440/wujiwuvasigexujogora.pdfIn PDF document text
    • https://cdn.sqhk.co/xufatirumina/ahajiZq/50815039103.pdfIn PDF document text
    • https://figapizezedop.weebly.com/uploads/1/3/4/3/134364787/ddbc8cc1c08cb3.pdfIn PDF document text
    • https://federadedeladol.weebly.com/uploads/1/3/4/6/134626130/widerope.pdfIn PDF document text
    • http://vefobekusira.iblogger.org/english_speaking_course_near_me_location.pdfIn PDF document text
    • https://medivurufif.weebly.com/uploads/1/3/1/4/131407406/3732893.pdfIn PDF document text
    • https://cdn.sqhk.co/moromasi/e2cjblV/exoplanet_definition_for_dummies.pdfIn PDF document text
    • https://cdn.sqhk.co/vukupamita/uqiegjq/kezid.pdfIn PDF document text
    • https://vidatizotasajad.weebly.com/uploads/1/3/4/0/134017381/zejodi.pdfIn PDF document text
    • https://sesupukaxupasi.weebly.com/uploads/1/3/1/0/131070911/zakafunowoliwaxofoza.pdfIn PDF document text
    • https://cdn.sqhk.co/litopozuf/jge4Gic/switch_controller_adapter_xbox_360.pdfIn PDF document text
    • https://jotutavujisab.weebly.com/uploads/1/3/1/1/131164129/2014852.pdfIn PDF document text
    • https://banafovogakake.weebly.com/uploads/1/3/5/3/135326552/setaned_ligilas.pdfIn PDF document text
    • https://poxomovuru.weebly.com/uploads/1/3/1/3/131381772/8687241.pdfIn PDF document text
    • https://cdn.sqhk.co/rinugezig/UgjVOWm/nosisoxigelobagibu.pdfIn PDF document text
    • https://cdn.sqhk.co/sebutarukaw/hd0pgeW/ahly_vs_zamalek_match_tickets.pdfIn PDF document text
    • https://seguronudolag.weebly.com/uploads/1/3/4/4/134468074/duliwem.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nilidax.epizy.com/83562597116.pdfIn PDF document text
    • http://kaxoxosav.rf.gd/8_ball_game_app.pdfIn PDF document text
    • http://bupomejov.epizy.com/how_to_use_the_hoover_carpet_shampooer.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000115ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x115FF 5296 bytes
SHA-256: 599d03cea850baf83f9e8946404606c84257d91f34d23a2e0d7c42eaa5bbd1e4
font_01_sfnt_off000127dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x127DC 11064 bytes
SHA-256: 36401f22c0b5bcb44f3b8c86f2d845c3d557d6fccd956909f9a6062e9b8b8ed8

Open this report in the interactive analyzer, or submit your own file for analysis.