Malicious PDF — malware analysis report

Static analysis result for SHA-256 45e7afbbc4ae1fec…

MALICIOUS

PDF

83.3 KB Created: 2021-04-26 00:56:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b91203d51530ff2197a360c2690e08df SHA-1: 7fc8fd278c701e0b8fbd717a1dfc162fdfc5a066 SHA-256: 45e7afbbc4ae1fecc81822e8ed91d97e4cd4dce52752267962e5c88a204371df
226 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, exhibiting characteristics of an advance-fee scam. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm designed to redirect users to potentially malicious content. The document body, though heavily obfuscated, appears to be a lure related to product reviews, likely to entice clicks on the embedded URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 7

  • 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.
  • 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.
  • 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://xezojetit.ru/strik?utm_term=lg+bp350+smart+blu-ray+and+dvd+player+reviews
    • https://mubatizusilaboj.weebly.com/uploads/1/3/4/4/134475350/sefetas.pdf
    • https://tadafami.weebly.com/uploads/1/3/4/3/134386911/820b16d651048.pdf
    • https://tulizeboposun.weebly.com/uploads/1/3/2/3/132303370/2640972.pdf
    • https://widijusadapabi.weebly.com/uploads/1/3/0/9/130969823/95d3de7199.pdf
    • https://tidemipevu.weebly.com/uploads/1/3/0/7/130740592/9131911.pdf
    • https://sazukigozozabep.weebly.com/uploads/1/3/4/3/134310948/988551.pdf
    • https://jokinurelebuvet.weebly.com/uploads/1/3/1/8/131856462/tarurenupu_semeso_judowajazaresi.pdf
    • https://fuwefepitebu.weebly.com/uploads/1/3/4/7/134709748/f0abaf5bd.pdf
    • https://kukibutojiw.weebly.com/uploads/1/3/0/7/130775835/fipuled-ginusaruvaruje-nuzevef-lidaje.pdf
    • https://ravuwiva.weebly.com/uploads/1/3/4/5/134519437/wumerufalupuka.pdf
    • https://runumoviw.weebly.com/uploads/1/3/4/8/134854062/a8e4f7d38.pdf
    • http://vegimawubukuwon.22web.org/3340379290.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://wozunitififut.epizy.com/cookie_sheet_cake_icing.pdf
    • https://99ca13e2-8bf0-45b2-93fa-bbfb519f101f.filesusr.com/ugd/5392be_7b10db5df8ca472295aa418381a76e51.pdf?index=true
    • http://xikexugisomap.rf.gd/aguacate_mexicano.pdf
    • https://s3.amazonaws.com/xoguwavosuje/xasomerumebi.pdf
    • http://vigopul.epizy.com/68329432421.pdf
    • http://pinisexukatata.rf.gd/49459977141.pdf
    • https://s3.amazonaws.com/pazatuv/tirufudakojabitutikekaped.pdf
    • https://562c2315-396f-49d1-9e45-1236e049cb13.filesusr.com/ugd/ec0012_5360efe35ce4420488c85beb5571b951.pdf?index=true
    • https://74f55dc1-c9a5-4be3-8cb6-5a41d2e6c5ca.filesusr.com/ugd/bacb18_5aa62714ba204c01b1a60c6dd3236202.pdf?index=true
    • https://s3.amazonaws.com/baposivarabuj/jutezemevijebagobon.pdf
    • https://5cbbff6b-7c47-4fbb-abda-9de5069fbc88.filesusr.com/ugd/1a89c8_3ea76da31a38460d88f08c79c9a611c7.pdf?index=true
    • 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://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000105da.bin
9b61e9ec90488d66db9cfb69f8c6096f7cf527f88068a989fdc9cf8a0470d725		 pdf-font-stream PDF embedded font (sfnt) at offset 0x105DA 6076 bytes
font_01_sfnt_off00011a91.bin
90fff74337df02d207457d3024889143225870e20932253294a6d34a9ebb9b6a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11A91 10716 bytes

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