Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a8097fa48182c5c…

MALICIOUS

PDF

44.9 KB Created: 2020-03-07 20:42:48 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-24
MD5: 9dfb0d9971feaf06ef69807bbef18bf1 SHA-1: 36165e5b57a219799d7f7f28a6027bc01d1f99e6 SHA-256: 4a8097fa48182c5ca432d270e9b3911fd6f34d8143758076b993fa641a70262a
96 Risk Score

Malware Insights

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

This PDF document contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic. The document body, though partially corrupted, contains a URL that matches one of the extracted links. The primary purpose appears to be directing users to a vast network of linked pages, likely for SEO manipulation or to serve as a landing page for further malicious activity. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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 http://yinghuangwangshangyule.br3h.com/uploads/1/3/0/8/130813401/130813401.html#effects+of+verbal+bullying+research PDF link annotation
    • http://aandeapothecary.com/uploads/1/3/0/7/130740086/fegalukalupoje.pdfIn PDF document text
    • http://victimswanted.com/uploads/1/3/0/5/130551962/sofuwoge.pdfIn PDF document text
    • http://therightofway.org/uploads/1/3/0/2/130272403/2667ff69704576.pdfIn PDF document text
    • http://hostmaster.naturalskinday.co.uk/uploads/1/3/0/4/130435518/vumusajo_pizorasusata_zobeka_ravudud.pdfIn PDF document text
    • http://starbritebucket.com/uploads/1/3/0/4/130436165/9ac34d.pdfIn PDF document text
    • http://bootcampandfitnessworkouts.com/uploads/1/3/0/7/130738949/fewaxezemekufow-gifozoweki-wetuburike.pdfIn PDF document text
    • http://newhopephotographylakeland.com/uploads/1/3/0/7/130775856/lozin.pdfIn PDF document text
    • http://goujonnygoujon.com/uploads/1/3/0/4/130476738/zaxurimujopi.pdfIn PDF document text
    • http://michelehrose.com/uploads/1/3/0/6/130639563/278093fa30c0a0.pdfIn PDF document text
    • http://strategicdonations.com/uploads/1/3/0/5/130540026/58aeaec3.pdfIn PDF document text
    • http://onquegroup.com/uploads/1/3/0/5/130590157/848de.pdfIn PDF document text
    • http://www.cookevillewelcomesall.com/uploads/1/3/0/5/130588880/lipon.pdfIn PDF document text
    • http://themidnightvoices.com/uploads/1/3/0/2/130288533/zoledukepaj.pdfIn PDF document text
    • http://historysstoryteller.com/uploads/1/3/0/5/130538950/7d8867ef9feb4.pdfIn PDF document text
    • http://aquariusinvestment.com/uploads/1/3/0/6/130604233/6dfd241296.pdfIn PDF document text
    • http://www.100czkplatba.com/uploads/1/3/0/8/130874469/xamox-bokupesajenas-bixoserowirisir.pdfIn PDF document text
    • http://jamesapartmentliving.com/uploads/1/3/0/6/130639904/8225827.pdfIn PDF document text
    • http://www.a-custom-esl-tutoring.com/uploads/1/3/0/6/130604595/550516.pdfIn PDF document text
    • http://mindforyouth.org/uploads/1/3/0/6/130640071/3969255.pdfIn PDF document text
    • http://www.appliancerepairbrosleaguecity.com/uploads/1/3/0/7/130738576/godukesijefigef-kevibebase-zanowobe.pdfIn PDF document text
    • http://bfebids.com/uploads/1/3/0/6/130621098/6beabd9.pdfIn PDF document text
    • http://www.financedweeb.com/uploads/1/3/0/7/130775404/tovofefokawo.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
🗂 Part of campaign: answersoperation.com 8 samples

Related samples 1

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

Full JSON: related samples API

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000864f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x864F 8224 bytes
SHA-256: d77c03b77fb9f01f423007bf78f25ceac563a4477e013cdc8c6271172e2e3a7b

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