Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a8a000a686287f7…

MALICIOUS

PDF

81.5 KB Created: 2021-01-05 21:20:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 3ef6a6896ad6745c76c7eef80e85fced SHA-1: eb626049faeed14f57f0b9b217561d0c7cc12a98 SHA-256: 8a8a000a686287f74eca7951c56a23b8b976d464cf8d3ba321a639535fd0bd5f
314 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF file was flagged as malicious by multiple heuristics, including critical detections for malicious redirector links and brand impersonation for credential phishing. The embedded links, such as 'https://gettraff.ru/aws?utm_term=firefox+er+file', point to redirector infrastructure that likely hosts a phishing page. The ML classifier also strongly indicated maliciousness, and ClamAV detected it as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • 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.
  • Brand-impersonation credential phishing lure critical SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: action link to abused redirector https://mogilifus.weebly.com/uploads/1/3/0/7/130739831/5401885.pdf.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://gettraff.ru/aws?utm_term=firefox+er+file In PDF document text
    • https://mogilifus.weebly.com/uploads/1/3/0/7/130739831/5401885.pdfIn PDF document text
    • https://lalidusuferub.weebly.com/uploads/1/3/4/4/134440540/5904663.pdfIn PDF document text
    • https://s3.amazonaws.com/viromibukoleliw/39365897816.pdfIn PDF document text
    • https://s3.amazonaws.com/jepavilutabilel/student_journal_answers_chapter_7.pdfIn PDF document text
    • https://s3.amazonaws.com/fedure/34891122495.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files2/vavogasezuwozulo.pdfIn PDF document text
    • https://s3.amazonaws.com/mokixetat/xokivogozofo.pdfIn PDF document text
    • https://zuwuwuxi.weebly.com/uploads/1/3/4/8/134883554/4094669a6bc88b0.pdfIn PDF document text
    • https://wefamojugibe.weebly.com/uploads/1/3/1/1/131164519/fupad.pdfIn PDF document text
    • https://s3.amazonaws.com/welanisowari/99948718767.pdfIn PDF document text
    • https://s3.amazonaws.com/nezanurugega/tixedutabawaledazava.pdfIn PDF document text
    • https://mafakovik.weebly.com/uploads/1/3/5/3/135347242/kufifajaja_pokajegefojub_fuguketo_xexurivinake.pdfIn PDF document text
    • https://s3.amazonaws.com/lanorolowu/runnings_bismarck_nd_ad.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/360a2f7c-f1ee-44d0-a647-725e29b1e776/vejedisejadowajod.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/685b5588-f72c-4f55-87a0-24b4edcab890/larimer_county_court_payments.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f980.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF980 4396 bytes
SHA-256: dd05054d3647515836d3a812f3e57bddc42f712b30affeae1cd13e242ebaec8d
font_01_sfnt_off0001087b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1087B 1936 bytes
SHA-256: cf50d13c5c21d2e34fba0d9dd21119d4839fc35fdaebfe62cbacf51850cc328d
font_02_sfnt_off000111ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x111BA 12032 bytes
SHA-256: a338c04085c007d34e8fb1ece25e5d2a866668d53a4138b5d729631af753a1d6