Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2f85388b942a8e6…

MALICIOUS

PDF

50.5 KB Created: 2020-08-04 05:05:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 94fb8956d713f75c824d7b017bdf3e8c SHA-1: 079428835027a63e215e08b640c3e36bedc2d16e SHA-256: a2f85388b942a8e623e22c7b9a0c7c3d789e058e14c8ca859b688eb112acd13e
194 Risk Score

Malware Insights

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

The PDF document contains a mass of external links, many of which are hosted on Shopify and appear to be SEO spam. One prominent link, disguised as a job interview guide, redirects to malicious infrastructure at 'ttraff.cc'. This indicates a phishing or redirection attack aimed at leading users to potentially harmful content. No scripts were extracted from this sample.

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.cc/pify?keyword=preparing+for+a+job+interview+questions+and+answers+pdf In PDF document text
    • http://files.brettstotalstumpgrinding.com/uploads/1/3/0/8/130814529/pusaj_sokilelulesejug_jowimobodaku_tusokarabus.pdfIn PDF document text
    • http://files.4hcampohio.org/uploads/1/3/1/4/131453208/fifaxedilebabix_nigute_jumod_rapekarugiki.pdfIn PDF document text
    • http://zixad.cliftonrefugeesponsorship.co.uk/uploads/1/3/1/3/131398091/ed928918ed4751.pdfIn PDF document text
    • http://files.wearefocalshot.com/uploads/1/3/1/4/131455158/gagowolejotix.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/1/0430/9496/6436/files/83552765900.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/48054684450.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1945/2072/files/donajojubikilaxogavef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8283/3308/files/22006688468.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9093/4949/files/suwujukosepixutota.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1094/8254/files/9348574861.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5802/1027/files/26390296427.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1058/0903/files/zozunajenavakefavuno.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0655/6322/files/you_cam_5._0.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9550/7622/files/kusadabaxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1883/0503/files/girurororatupotejujalum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/99237037604.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
🗂 Part of campaign: 4hcampohio.org 5 samples

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000076f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76F2 5552 bytes
SHA-256: 014714646de78935532190b6e1a284a6c052a44846d59dd61a415d3005a43b62
font_01_sfnt_off000089de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89DE 10628 bytes
SHA-256: a140c002b7b419dae70765415bec6d469249dbe25df5b73fcfc9aa038e2b2cb7
font_02_sfnt_off0000ae24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAE24 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361