Malicious PDF — malware analysis report

Static analysis result for SHA-256 32c2540446a234b1…

MALICIOUS

PDF

86.5 KB Created: 2021-03-22 22:47:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 0c1ad8819957a391318715021db8443c SHA-1: f9c390ea9dd84c24cc58d46fe3788b7e225fa777 SHA-256: 32c2540446a234b1546f91ebbce30c10ae255e6695496ec19141322fc8f537b7
206 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, exhibiting characteristics of a link farm and callback phishing lure. It contains numerous external links, many hosted on disposable domains, suggesting an attempt to manipulate search engine results or direct users to malicious content. The presence of embedded URLs and the PDF_SEO_LINK_FARM heuristic indicate a primary function of redirecting users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://lozipotod.ru/wix?keyword=cloudland+high+school+football+coach PDF link annotation
    • https://karifizamazo.weebly.com/uploads/1/3/1/3/131383674/tapuxanelinetame.pdfIn PDF document text
    • http://spiritstudio.ru/zubuzusimisidekuy5l3k.pdfIn PDF document text
    • http://detonic-italy.website/aula_virtual_3_santillana_apkyqypb.pdfIn PDF document text
    • https://sajosapisede.weebly.com/uploads/1/3/4/3/134344890/06dbf7d6316f.pdfIn PDF document text
    • https://vukekitap.weebly.com/uploads/1/3/1/4/131438073/parutedubib.pdfIn PDF document text
    • https://vilewojux.weebly.com/uploads/1/3/0/8/130874250/2ee35bbb01e.pdfIn PDF document text
    • https://fajupumivut.weebly.com/uploads/1/3/4/1/134108914/3169630.pdfIn PDF document text
    • http://taygerr.com/josh_groban_river_sheet_music46iq3.pdfIn PDF document text
    • http://buledumemo.iblogger.org/alpha_male_strategies.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/e3c8fe84-495c-4cf5-9814-cf0ead7d25a3/skyscan_atomic_clock_manual_28500.pdfIn PDF document text
    • http://talakukatutevib.epizy.com/acier_bat_text_gris_font.pdfIn PDF document text
    • https://s3.amazonaws.com/xakusineba/93616116.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/25f0ded4-b994-47c7-be4a-255094d720d8/excelsior_mn_townhomes_for_sale.pdfIn PDF document text
    • http://verirajoxa.epizy.com/tibagekawatela.pdfIn PDF document text
    • https://s3.amazonaws.com/rebesudanolo/zuvagivukawes.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_off00011304.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11304 5232 bytes
SHA-256: b2eb4ef75458048fedbcec5d70234cfdb204e6ba9dd8577b711e1cca73f51f9d
font_01_sfnt_off000124cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x124CD 11940 bytes
SHA-256: e3763fac041cd27ae226437ba635b46281435c25c11273957325c8e4df15cdae

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