Malicious PDF — malware analysis report

Static analysis result for SHA-256 959b457acbb3bf78…

MALICIOUS

PDF

77.5 KB Created: 2020-09-17 05:38:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a4ddf431ab3ab5740dabd4e5861e4708 SHA-1: ea786073d6c6792d59b83bf66192804d0bcaed13 SHA-256: 959b457acbb3bf78dd5bc66636c5d0e79a69dc65d09003e2c9df23863f11659e
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains numerous links to external websites, many of which appear to be part of a link farm designed to manipulate search engine results. One critical heuristic identified a link to a known malicious redirector infrastructure at https://ttraff.club/wix. The document body, though heavily obfuscated, contains the same URL. This suggests the primary purpose is to redirect the user to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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://ttraff.club/wix?keyword=muslim+tribes+in+mindanao In PDF document text
    • http://files.thedivineu.academy/uploads/1/3/1/6/131606954/fb7ae563.pdfIn PDF document text
    • http://files.paolositaliankitchen.com/uploads/1/3/0/8/130873941/guzusazezomisifo.pdfIn PDF document text
    • http://files.sprucehousingcoop.com/uploads/1/3/1/4/131453950/zasikariget-gabumisakopepum-foliwemazutimo-zufozeva.pdfIn PDF document text
    • http://files.danbrambilla.com/uploads/1/3/1/3/131398292/6805585.pdfIn PDF document text
    • http://tujugomad.wesselsdancestudio.com/uploads/1/3/0/8/130874388/e40a2cc75dfe0fc.pdfIn PDF document text
    • http://kutop.fillinupmyteacup.com/uploads/1/3/0/8/130873947/fesagabituxozexarer.pdfIn PDF document text
    • http://files.annagalatirealtor.com/uploads/1/3/0/7/130776718/979473.pdfIn PDF document text
    • http://files.fotsga.com/uploads/1/3/0/7/130739311/ee63bb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8667/5109/files/management_information_system_questions_and_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6835/0886/files/tow_dolly_straps_tractor_supply.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8957/6601/files/pebagefajelewevin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1438/8888/files/telowowewimuwodibilukuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1014/3902/files/sofa_score_sepsis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5892/0610/files/jewanaxizom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6875/2023/files/xapivopoxifo.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e5d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5D6 5000 bytes
SHA-256: 3bbc5eca6e2a3672dfc12226ace759cebb69d0ed442cd463ff522deee90af593
font_01_sfnt_off0000f6ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6AE 10468 bytes
SHA-256: 00924a5cf0b25344feecfc16c1ec6697d7cfb15342ec7481ead0ae32dc93603a
font_02_sfnt_off00011a71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A71 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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