Malicious PDF — malware analysis report

Static analysis result for SHA-256 8adf225710c4d603…

MALICIOUS

PDF

84.1 KB Created: 2021-04-19 04:34:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4de36f263d3b6f618ad35c07b72c4c48 SHA-1: 9e692450633cee0c87810c6b1a7b0b319c8c1f57 SHA-256: 8adf225710c4d603729108180af9b0119a45042edcd2c459cef604f8b19cbf6d
216 Risk Score

Malware Insights

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

This PDF file exhibits characteristics of an advance-fee scam, including language related to lotteries, prizes, and parcel delivery. The presence of numerous external links, many pointing to PDF files, suggests a link farm or redirection mechanism. While no scripts were explicitly extracted, the PDF structure and heuristic firings strongly indicate a phishing or scam attempt, likely involving redirection to malicious URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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.
  • 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://jacksth.ru/strik?utm_term=how+much+is+viper+remote+start
    • https://zomimodobi.weebly.com/uploads/1/3/0/7/130739583/vakefamu.pdf
    • https://cdn.sqhk.co/feripamapuv/NjisijF/f1_car_race_today.pdf
    • https://cdn.sqhk.co/norowitidot/jgddHgh/chat_rooms_for_depression.pdf
    • http://naxiramomamaz.66ghz.com/2014_gmc_acadia_slt_manual.pdf
    • https://cdn.sqhk.co/norowitidot/hZnpW9m/recorder_songs_with_just_b_a_g.pdf
    • https://sowotelimavo.weebly.com/uploads/1/3/4/0/134000290/kedoritoret.pdf
    • https://fofebufog.weebly.com/uploads/1/3/4/7/134738758/motunewutabegabela.pdf
    • https://kazenatujexisof.weebly.com/uploads/1/3/1/6/131637291/bajivelet-kemojezamu.pdf
    • https://weropejo.weebly.com/uploads/1/3/4/3/134321986/2891265.pdf
    • https://riviruzo.weebly.com/uploads/1/3/0/7/130739493/8232834.pdf
    • https://cdn.sqhk.co/votijavos/zXmibDq/34073976144.pdf
    • https://golizagizaziw.weebly.com/uploads/1/3/4/7/134701046/burogesonotom.pdf
    • https://nutagabe.weebly.com/uploads/1/3/5/3/135325028/fananiraxereturo.pdf
    • https://duwaxitim.weebly.com/uploads/1/3/4/3/134312722/kelir-fulazulupe-xibukofosu-buxowaroxo.pdf
    • https://rebageronamit.weebly.com/uploads/1/3/0/7/130775484/6713772.pdf
    • https://mevukufidax.weebly.com/uploads/1/3/1/3/131379039/vamax-tudelemojevib-xidunozubaliv.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://sagunum.rf.gd/brian_friel_translations_online.pdf
    • https://s3.amazonaws.com/kotodur/q_es_una_propuesta_de_valor.pdf
    • https://s3.amazonaws.com/fuwuzerijofa/tuzefava.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://scripts.sil.org/OFL
    • 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_off0000f701.bin
f85d12b80fe67ab94d2cc218f192b345841ad7d28c140e7e93749947d648ec68		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF701 5252 bytes
font_01_sfnt_off000108cc.bin
2d2895867eca4536247cd7f681631cab290e565b8d5c04a025675124dc9a3b6d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x108CC 10764 bytes
font_02_sfnt_off00012dd1.bin
e93acd332f5893643511f4cefd38969ad5c744ad1b08842a788b6be7d277dd15		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12DD1 16204 bytes

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