Malicious PDF — malware analysis report

Static analysis result for SHA-256 6be90aae35543f4d…

MALICIOUS

PDF

64.8 KB Created: 2020-12-03 04:11:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 1547f026bbbfebaaef5915f9b40544e5 SHA-1: bae7885f300eeabf29a3c8b51a79272dbd0eaeaf SHA-256: 6be90aae35543f4dd084dfdf4641c858b45b0d50b814f66d983e72eac82ce54e
156 Risk Score
Tags
free-cdn-ebook-manual-lure

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 0.9998

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://trafffe.ru/strik?utm_term=reference+guide+for+pharmacy+technician+exam+pdf PDF link annotation
    • https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/gapovowumepekegosiza.pdfIn PDF document text
    • https://belafawejogawol.weebly.com/uploads/1/3/4/5/134583754/jakadaworulozazur.pdfIn PDF document text
    • https://tedomidile.weebly.com/uploads/1/3/2/7/132712102/pazufososegaruvoko.pdfIn PDF document text
    • https://saxejuwujare.weebly.com/uploads/1/3/4/4/134448786/jizepojedijoninob.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379030/normal_5f8e3408014f3.pdfIn PDF document text
    • https://xeludopoveju.weebly.com/uploads/1/3/4/5/134528604/1af2c697f97ebf.pdfIn PDF document text
    • https://dojulukasinu.weebly.com/uploads/1/3/0/7/130776790/voramudotunawupiloz.pdfIn PDF document text
    • https://vawovuwowoxug.weebly.com/uploads/1/3/4/0/134040368/dusutudonejet.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453117/normal_5fbc20edbdd60.pdfIn PDF document text
    • https://gepagalegizexu.weebly.com/uploads/1/3/4/4/134478943/3948337.pdfIn PDF document text
    • https://votawaxamudogop.weebly.com/uploads/1/3/4/4/134400347/5215875.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/goviwigax/37005889952.pdfIn PDF document text
    • https://s3.amazonaws.com/kisimujuk/vomujavutakubinadifad.pdfIn PDF document text
    • https://s3.amazonaws.com/bolovopizonuki/archspire_relentless_mutation.pdfIn PDF document text
    • https://s3.amazonaws.com/libeganot/al_barzanji.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ff59b36d-1614-4708-8faa-97032503ca35/zikowotujaxedi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/937762e0-e53f-45a6-aa25-10aefe64599d/71622538060.pdfIn PDF document text
    • https://s3.amazonaws.com/midizaxopazeji/99318986394.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_off0000bf20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF20 5536 bytes
SHA-256: 4469f36dc7b2c9669162e8a16160e47d1e12e062193563a2a6fc8e2b84402c0f
font_01_sfnt_off0000d1e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1E4 10560 bytes
SHA-256: ceac345ddeaffafbc2886d9f2452a95bb6c75a34224aa193ec71a14d9b23fa9e

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