Malicious PDF — malware analysis report

Static analysis result for SHA-256 0885bfcc11f194d5…

MALICIOUS

PDF

100.0 KB Created: 2021-03-24 14:27:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: d50a1f1535a45fa56677d92457c2026d SHA-1: 0b0eca0408e0b204ea880394d50df3185419f552 SHA-256: 0885bfcc11f194d52d3ee85d382577381057808802006f7a2b6c74030d2d7412
156 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. 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 0.9997

Heuristics 5

  • 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.
  • 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://fokemale.ru/wix?keyword=the+last+trump PDF link annotation
    • http://nutosuvitiraj.scienceontheweb.net/air_pollution_definition_causes_effects_and_prevention.pdfIn PDF document text
    • http://omerkatanalp.com/jinalepasibovexo3iocp.pdfIn PDF document text
    • http://migriruy.ru/books_on_how_to_be_a_real_estate_agentjairk.pdfIn PDF document text
    • http://usesalon.xyz/grounded_theory_research_sampleqtnew.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://b7e73dfe-ad35-4791-b4f7-7500f5b7882c.filesusr.com/ugd/bc79a4_d07c8f9d18464dc1a2ac0b328958f8e7.pdf?index=trueIn PDF document text
    • https://04a80c79-134c-446e-801b-0c1635678e59.filesusr.com/ugd/5cebf8_42246bfe8a7f4affaae98b566187ae30.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/dovulavavo/jufumakorefakusidurokipaz.pdfIn PDF document text
    • https://s3.amazonaws.com/podawakumepewez/73074264617.pdfIn PDF document text
    • https://s3.amazonaws.com/redegelesibif/16142435833.pdfIn PDF document text
    • http://pavafisufopu.myartsonline.com/best_ecology_textbook.pdfIn PDF document text
    • https://s3.amazonaws.com/gofilafixu/acura_ilx_2015_manual.pdfIn PDF document text
    • https://911f1565-2faa-4874-b261-330d521e7362.filesusr.com/ugd/f46427_73029fc04d4448e6ad9ce9aabb9d077d.pdf?index=trueIn PDF document text
    • https://f8e303d0-f350-43d2-b7c3-f886ef13ec25.filesusr.com/ugd/1bb397_a2261178763a4305a6cd5adc35e8df2c.pdf?index=trueIn PDF document text
    • https://16dc6c2a-32e3-4a69-9eea-5b59d93654f8.filesusr.com/ugd/176c29_2c44f23c8e2b461796f70bb33e7b0901.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/lixuduwonifa/dunejepetoxukuxa.pdfIn PDF document text
    • https://s3.amazonaws.com/rojalexipokadaz/sentence_fragments_quiz_with_answer.pdfIn PDF document text
    • https://5c90cfa9-af55-48e2-9430-1f3580382729.filesusr.com/ugd/e2b09b_6feee1157fe14617ba1e4a88518c6ea7.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/mafavuzenoliki/realidades_1_capitulo_1a_infinitives_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/joterige/25481684420.pdfIn PDF document text
    • https://981168d4-05fc-44b6-871d-73371d7e8cf1.filesusr.com/ugd/87d215_edba6dfb531a48b2869daf30141c30ae.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/folexapurilowe/beats_solo_3_best_price_canada.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000147b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x147B1 5008 bytes
SHA-256: b1c81c53c21c1eaca71786379eeb4d698f96577037db31cf3eebf5028dc9c920
font_01_sfnt_off00015885.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15885 12592 bytes
SHA-256: 60147dc117805d4e9357338a7c901a28df15e0eb1098b7737c68d3c7bb60bbc5

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