Malicious PDF — malware analysis report

Static analysis result for SHA-256 89ff932e9fb70968…

MALICIOUS

PDF

40.2 KB Created: 2020-08-03 15:01:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 999670e5821ae8b21443f063e35a96ad SHA-1: ee3bf96e99dca58c1f01d37e81e2fdb9e41ebb1a SHA-256: 89ff932e9fb709686ec16f89f4f73ceb482c2e56ff9a56fdccbf223acc111e40
202 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one identified as a malicious redirector. The document body includes text suggesting a download lure, and the presence of a 'SE_DOWNLOAD_BUTTON' heuristic further supports this. The primary malicious IOC is the redirector URL, which likely leads to further malicious content. The file also contains a large number of external PDF links, many hosted on Shopify, suggesting a link farm for SEO poisoning or traffic redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=collocation+dictionary+pdf+free+download In PDF document text
    • http://files.marisamsorce.com/uploads/1/3/0/7/130738971/lokobikaso-jimusisevos-suvekik.pdfIn PDF document text
    • http://files.franklalumia.com/uploads/1/3/0/7/130738836/fa74c426e631ea4.pdfIn PDF document text
    • http://files.hr-transparency.com/uploads/1/3/2/6/132695714/1902794.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7786/0516/files/90842742331.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5797/0328/files/xezezopoben.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8544/6824/files/81997774704.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/0081/2952/files/minecraft_decay_enchantment.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3485/3021/files/31356557452.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7877/0076/files/44072855322.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2661/9288/files/ymca_new_bedford.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4620/5602/files/fagemixotewina.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5458/0391/files/6786011236.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2619/4336/files/wefapotexadepivekirijez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2885/7503/files/maguseperutimiru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3550/7358/files/1712280030.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2402/2677/files/sojisedinizuxopazanozapaw.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_off00005eb3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EB3 5072 bytes
SHA-256: 6230651607071a3f54257f1110b317e9b06ef23c0bb9392c52786914a1eb9e4d
font_01_sfnt_off0000701b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x701B 10544 bytes
SHA-256: 47952100a75e253e4cf253bfc24fbd3384e8ccf5844fa45f80dd6de7970aa12e