Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7172f0b6075396c…

MALICIOUS

PDF

81.3 KB Created: 2021-06-07 17:02:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 8a919b7e1a8633a754ae2a195a63cea3 SHA-1: aa6cb63d595528c95ad66fbd3f456b4b4f3bc6c4 SHA-256: f7172f0b6075396c8b169b15874d283815b8e286fa6c29572159085d80126fe7
206 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was detected as malicious by ClamAV and an ML classifier, exhibiting characteristics of a phishing and link farm attack. It contains numerous external links pointing to disposable domains, likely intended to manipulate search engine results or redirect users to malicious content. The document body, though heavily obfuscated, contains a reference to 'Alabama child support payment center montgomery al address', suggesting a potential lure for phishing or scamming purposes.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://nomylo.ru/pbw?utm_term=alabama+child+support+payment+center+montgomery+al+address PDF link annotation
    • https://minawitagolufu.weebly.com/uploads/1/3/5/3/135312922/sibagu-xemanemafaxumig.pdfIn PDF document text
    • https://buwabejaxex.weebly.com/uploads/1/3/7/5/137516859/fusisobiwo.pdfIn PDF document text
    • https://tofibuji.weebly.com/uploads/1/3/5/3/135309424/9756649.pdfIn PDF document text
    • https://sagetiruguw.weebly.com/uploads/1/3/0/8/130814856/meguzipozev-kozuf-kolorafa.pdfIn PDF document text
    • https://nedosadowizo.weebly.com/uploads/1/3/5/3/135347652/710f57ef2.pdfIn PDF document text
    • https://mogeletonedilo.weebly.com/uploads/1/3/1/4/131482944/kekilopazam.pdfIn PDF document text
    • https://mosagalalevo.weebly.com/uploads/1/3/4/6/134668437/vajugok.pdfIn PDF document text
    • https://vivuwugo.weebly.com/uploads/1/3/0/9/130968913/wosuges-fixofokulezabu.pdfIn PDF document text
    • https://xebadaminel.weebly.com/uploads/1/3/4/5/134523447/miputafakixikix.pdfIn PDF document text
    • https://tetavezodumop.weebly.com/uploads/1/3/4/6/134645623/gizowobevebot.pdfIn PDF document text
    • https://kubegagalinono.weebly.com/uploads/1/3/4/7/134714436/8649055.pdfIn PDF document text
    • https://dowikonusinewe.weebly.com/uploads/1/3/4/3/134374018/9996683.pdfIn PDF document text
    • https://jinafoxibufesow.weebly.com/uploads/1/3/5/2/135293268/wozevisawij_serimifirivo.pdfIn PDF document text
    • https://javowutimor.weebly.com/uploads/1/3/4/0/134016661/3354600.pdfIn PDF document text
    • https://bivibubumi.weebly.com/uploads/1/3/1/6/131637176/2121705.pdfIn PDF document text
    • https://ranenowubugipo.weebly.com/uploads/1/3/4/0/134040983/vuzirivegopa_fuxurubunivi_wapajiguw.pdfIn PDF document text
    • https://jikudirag.weebly.com/uploads/1/3/4/0/134040407/6535974.pdfIn PDF document text
    • https://wisixujedos.weebly.com/uploads/1/3/4/7/134732494/9961002.pdfIn PDF document text
    • https://vorujefam.weebly.com/uploads/1/3/4/3/134322124/2359126.pdfIn PDF document text
    • https://lakukuvirukum.weebly.com/uploads/1/3/0/8/130874631/fetivaneku-levumevifelaget.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/bece435d-f5f2-4356-a696-ebb825e9466b/what_if_netflix_series_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2eadc6f4-3c98-4e60-874c-68185e3afc5b/how_to_get_log_bench_recipe_animal_crossing.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_off0000fb33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB33 5720 bytes
SHA-256: 903589f9e8e9cd0c62b6e877e310c6c35296d1bb20d8dab10d0ecefbedd85c8b
font_01_sfnt_off00010e7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E7D 11912 bytes
SHA-256: 850f3df613e143ad3d2d19af1ee49cbb0980d083976cfa2c1006aaefb13883a0

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