Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e7980e514bc957c…

MALICIOUS

PDF

66.5 KB Created: 2020-12-04 12:14:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: d05b19b52d368d607e52ce1afee6b79d SHA-1: 22030df1de86d5853d88618b845d4521074a1a53 SHA-256: 1e7980e514bc957c039d7e59709ab51a46a11c62d80373de7545e7b892e4172c
214 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with critical heuristics indicating it's a malicious redirector and part of a link farm. The ML classifier and ClamAV detection strongly suggest malicious intent. The embedded URLs, such as 'https://traffine.ru/123?utm_term=mystic+messenger+unlimited+hourglass+apk', are likely used to direct users to phishing sites or download further malware.

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://traffine.ru/123?utm_term=mystic+messenger+unlimited+hourglass+apk In PDF document text
    • https://rikurifijuse.weebly.com/uploads/1/3/4/6/134681474/kakegibefokow.pdfIn PDF document text
    • https://fatitabo.weebly.com/uploads/1/3/4/7/134757356/b6dd5dca74494.pdfIn PDF document text
    • https://vokewubepil.weebly.com/uploads/1/3/4/4/134443825/4488169.pdfIn PDF document text
    • https://zetaxufonepijak.weebly.com/uploads/1/3/4/3/134353616/zivininupagoxe_wojek_mefudujove_kuvapokofuvikur.pdfIn PDF document text
    • https://jurefuzosapob.weebly.com/uploads/1/3/4/9/134901670/cf038105b7e312.pdfIn PDF document text
    • https://rikidunojig.weebly.com/uploads/1/3/4/4/134488605/gipugus_putagulupudo_juwobaworowosiw.pdfIn PDF document text
    • https://dopuxaponaxu.weebly.com/uploads/1/3/2/6/132695391/mozagulad.pdfIn PDF document text
    • https://tiposowa.weebly.com/uploads/1/3/1/1/131164246/13433fe.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc28f693dfdd95b60dfa9a7/t/5fc4e02e4f983757207838a3/1606737966904/7495553751.pdfIn PDF document text
    • https://s3.amazonaws.com/jarawaxanivu/ion_brilliance_permanent_hair_color_chart.pdfIn PDF document text
    • https://s3.amazonaws.com/mewezekilafef/copperheads_civil_war_definition_quizlet.pdfIn PDF document text
    • https://s3.amazonaws.com/vogubivajavofu/lovonuwanudajusi.pdfIn PDF document text
    • https://s3.amazonaws.com/turip/asian_countries_capitals_and_currencies.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_off0000c8dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC8DC 5660 bytes
SHA-256: bba7fdddd73db35f1ad002bceb7f819ea3b0e0f315c6fe0de2a1b51470ecf287
font_01_sfnt_off0000dc09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC09 9748 bytes
SHA-256: 190fee164bc25febf766ec74a0471c686fb43a201cd8b3d36b853e26c1298b80

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