Malicious PDF — malware analysis report

Static analysis result for SHA-256 3603aef3b2fc350a…

MALICIOUS

PDF

42.6 KB Created: 2020-08-19 11:02:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4f01202b559952d61f486662ab1dcaaf SHA-1: 469915bba36e4a8af21bc6b8cd0a866f16d28678 SHA-256: 3603aef3b2fc350af6f282b8f0db0b52f31e3f77f3b4e27039a2c21dcd04823b
194 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, a common tactic for phishing or malware distribution. One critical heuristic firing indicates a direct link to known malicious redirector infrastructure at 'https://ttraff.cc/pify?keyword=trasformazione+da+centimetri+cubi+a+litri'. Another heuristic identified a PDF link farm, suggesting an attempt to manipulate search engine results or distribute content across multiple sites. The document body, though partially corrupted, contains text related to unit conversion and references the wkhtmltopdf tool, potentially as a lure.

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=trasformazione+da+centimetri+cubi+a+litri In PDF document text
    • http://mewopogi.prepvisionconsulting.com/uploads/1/3/1/3/131384429/5666545978091a4.pdfIn PDF document text
    • http://files.verdantmindandbody.com/uploads/1/3/2/6/132682564/rodudubomo_romakedup_midusiseginag_zenuj.pdfIn PDF document text
    • http://kixukat.vidosphere.com/uploads/1/3/1/4/131453574/827532e.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/1/0431/5856/9115/files/xinetolafu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8549/5453/files/fugodikodawitubukexeni.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7593/5134/files/lipoferafagaza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2508/9191/files/linisufi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4145/5254/files/google_form_conditional_questions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0819/5751/files/escala_cromatica_teclado.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5604/7004/files/84956022085.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7955/6504/files/sociology_phd_research_proposal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8424/3351/files/42408424854.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 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_off000060ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60EF 5308 bytes
SHA-256: ee01492625cab3c759792bc7ef7d299eae29a940965b139481f3edcc192c8b74
font_01_sfnt_off000072e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72E0 14228 bytes
SHA-256: 47e30eb146f83c15ca34db2b79de7bba18f3b1d2c0ccc3f6b072273119a68c5f

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