Malicious PDF — malware analysis report

Static analysis result for SHA-256 261a36a2df403d9f…

MALICIOUS

PDF

42.9 KB Created: 2020-08-01 08:42:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 79e98591339504e653ad2e146649e7cc SHA-1: cca5a44a1ca3c97d947c7e0fb9646f6681e5b0ae SHA-256: 261a36a2df403d9f69ad7f0f1a4f459fec2c9b6a69f5322adb1ec82dbf2c745d
202 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically `https://ttraff.cc/pify?keyword=install+xgboost+python`. This link is presented within the document body, likely disguised as a download button, aiming to trick the user into clicking it. The presence of a large number of external PDF links also suggests a link farm or SEO poisoning tactic. The document's content and structure strongly indicate a phishing or redirection attempt.

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=install+xgboost+python In PDF document text
    • http://files.lightsoutlet.net/uploads/1/3/0/8/130874276/pubetikebimom.pdfIn PDF document text
    • http://files.suzannepetrizzi.com/uploads/1/3/1/4/131437158/luzuku.pdfIn PDF document text
    • http://files.poodledynasty.com/uploads/1/3/2/8/132814071/kovawafadalimazogegi.pdfIn PDF document text
    • http://files.jilliancreativedesign.com/uploads/1/3/1/4/131454034/bajipate.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/1/0438/4020/9056/files/29377243656.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/87913440599.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6406/5174/files/63147859756.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7166/7360/files/zuvusemufuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0105/2310/files/34373884689.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1906/7815/files/52676982676.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5768/3349/files/sifidinoxularuxos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4359/3109/files/minecraft_tinkers_modifiers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7193/8461/files/lalumewuvowujatuzo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7877/9047/files/fizomogikuguroledalevo.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: poodledynasty.com 3 samples

Related samples 8

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_off000060ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60FF 5232 bytes
SHA-256: 1d99132688a7894fc2b7e127aba1e372c3212aaca7b395b80ec3e9189fee3662
font_01_sfnt_off000072d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72D4 14164 bytes
SHA-256: 03689fb55280caeeb6e5babd7645a89a5eb149781c9174a8029335c14c26b8c8

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