Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f36d0991b8c34ce…

MALICIOUS

PDF

153.8 KB Created: 2020-08-04 22:09:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 81bb8e07c5558ed6501df6633162d32e SHA-1: 80881ae75219d1f52cc02b25cb34e726c37fd695 SHA-256: 8f36d0991b8c34ceddd9bfe7c212a1c00ab86ef444a4273abda4d42fb7b980ab
134 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=understanding+comics+scott+mccloud+pdf'. This indicates the document is designed to redirect users to potentially harmful websites. The document body, though heavily obfuscated, contains the same URL, reinforcing its malicious intent. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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=understanding+comics+scott+mccloud+pdf In PDF document text
    • http://vovedipif.beavercrossministries.com/uploads/1/3/0/7/130776326/dubopalanugaso_zifofes_jabuledipif.pdfIn PDF document text
    • http://files.tukatafoundation.org/uploads/1/3/2/8/132814990/166765.pdfIn PDF document text
    • http://files.varvelsporthorses.com/uploads/1/3/2/7/132741089/zozun-zunapif-xepageraseb-puzadogop.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/1/0439/8078/3774/files/ancient_gold_dragon_5e.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6566/1845/files/27792559987.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8568/5153/files/42300158239.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8470/7992/files/bbc_english_book_class_9.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9401/6157/files/bikipetupebepusotenax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8266/1526/files/lodafugexamuxanonut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4868/1120/files/41199235748.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/77084518355.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3105/1943/files/27539584647.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7661/6341/files/toxagawew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2875/0241/files/tubaserojizox.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: tukatafoundation.org 8 samples

Related samples 4

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002229c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2229C 5468 bytes
SHA-256: 9f399326fee07128a4fbe67fb5fd07e9dff2cd24c19f507f3f3be959b794a266
font_01_sfnt_off00023524.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x23524 10676 bytes
SHA-256: 1c3ede96e3608109b957f9ed0ef81905998af1fb5a0a91558556fb8a12dcf3c7

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