Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a5c9ebcb98a458c…

MALICIOUS

PDF

40.9 KB Created: 2020-08-17 02:26:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: faa82c3160ff9f50e1806a70475aee3c SHA-1: 222c29c8a261dff01311452c38a6d93545fc332c SHA-256: 4a5c9ebcb98a458c4989d7871ff3b1cf9925ce947f677442abe4adc64c5f2bab
194 Risk Score

Malware Insights

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

This PDF file contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body, though partially corrupted, also contains this URL and references 'free motorola android phone recovery software', suggesting a social engineering lure. The PDF also hosts a large number of external links, many pointing to Shopify domains, which is indicative of a link farm used for SEO poisoning or to distribute malicious content.

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.com/pify?keyword=free+motorola+android+phone+recovery+software In PDF document text
    • http://files.fca-oregon.org/uploads/1/3/1/4/131453365/2711151.pdfIn PDF document text
    • http://files.bluemantaswimming.com/uploads/1/3/1/3/131380342/5fdd29.pdfIn PDF document text
    • http://files.protectmusiceducation.org/uploads/1/3/1/0/131070934/xidedulim.pdfIn PDF document text
    • http://files.masasailing.org/uploads/1/3/1/4/131437680/29c14a.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/1/0430/6888/3106/files/46971640852.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/9148/7909/files/node_js_tutorial_point.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4686/0960/files/husky_power_washer_1800_psi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/satofekefekuwozavobijogut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6301/7629/files/95107202341.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5930/5880/files/skyrim_how_to_install_enb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8808/5145/files/fononasunejotujobekutu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5771/6117/files/2549459210.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000060a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60A4 5604 bytes
SHA-256: 82cb8c59e86ac04c96ac84f1c4433bec6dfddc11fec7b2cc21800d4ff380c9f1
font_01_sfnt_off00007397.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7397 10264 bytes
SHA-256: 4a649759c77e067be5ecb99fc4148e6c34d6149295bbac8754efa14f730323b2

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