Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a89a7b37a770dac…

MALICIOUS

PDF

34.4 KB Created: 2020-08-03 06:49:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 33da7d179f55eacbb4ff8db6093fdc48 SHA-1: 4687bfa43df27b721b0cb60ce9c27a69fdad97c8 SHA-256: 8a89a7b37a770dac7c4665b9b0a3b2a252fc5a1735915c25c0bffeb5d1d0a2c0
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, with a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.cc/pify?keyword=wiiu+usb+helper+title+key'. Another critical heuristic indicates a PDF link farm, suggesting an attempt to distribute content or lure users. The ML classifier strongly supports the malicious verdict. The document body, though partially corrupted, contains the malicious URL, reinforcing the attack pattern.

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=wiiu+usb+helper+title+key In PDF document text
    • http://files.first-contact.org/uploads/1/3/2/6/132681033/cddb01866.pdfIn PDF document text
    • http://files.walkandcycleherefordshire.com/uploads/1/3/0/7/130776629/litug-gikojodidij-zarutuvaguv-sonixabuxi.pdfIn PDF document text
    • http://files.blmslibrary.org/uploads/1/3/1/6/131606644/ebdfe5.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/1/0429/6772/8279/files/3679753108.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6805/4949/files/35185420916.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3526/3138/files/53148004507.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8547/0623/files/71254661924.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1645/4305/files/notezezotumigarutigog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7179/8424/files/nujavefan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4190/7100/files/compress_mp4_video.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7939/1637/files/resawetetuzetifimesare.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0594/1672/files/lofasijaku.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_off00003fd1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3FD1 4680 bytes
SHA-256: 2fe216aae67c11cc5c0dd1413c2b88913e2ca2b1be57fe0b1637ca0d11755865
font_01_sfnt_off00004fd7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4FD7 9152 bytes
SHA-256: 4825ff1fa11ecdb6987b69ce6fe5b4ed4d76de15a69f8605c2d218c647004a7c
font_02_sfnt_off00006f32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F32 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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