Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a8aba2159998119…

MALICIOUS

PDF

43.3 KB Created: 2020-08-18 14:00:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ca5fef9a1ab2dcfdbd691dc12128de8f SHA-1: f1a9dbf95fe5e5ed86a3aa4b4728a3e367868195 SHA-256: 3a8aba2159998119e947cc66eb48862c5c1b0bd86c95484c610b5a7607d2ee75
194 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 pointing to 'https://ttraff.ru/pify?keyword=deutsche+bahn+annual+report+2007'. This URL is designed to lure users into clicking, likely leading to further malicious content or downloads. The document also features a PDF link farm, indicating a broader SEO poisoning or spamming campaign. No scripts were extracted, but the presence of a malicious redirector is sufficient evidence of malicious intent.

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.ru/pify?keyword=deutsche+bahn+annual+report+2007 In PDF document text
    • http://junisa.mtoliverunningtofeedthehungry.org/uploads/1/3/1/4/131483154/5012235.pdfIn PDF document text
    • http://jolejage.amydawsbodywork.com/uploads/1/3/1/3/131380600/7854299.pdfIn PDF document text
    • http://febavozu.davisgammas.org/uploads/1/3/1/3/131383541/acd2676fc.pdfIn PDF document text
    • http://gakizuze.bliss-out.co/uploads/1/3/0/7/130739625/7382517.pdfIn PDF document text
    • http://files.drlukellc.com/uploads/1/3/2/6/132681452/8850057.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/1/0440/7630/2486/files/xirewivevimazelotanevagik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1440/5793/files/29350157068.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7540/3929/files/govupafabel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0212/6755/files/orbit_er_linux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1238/2117/files/install_cisco_vpn_client_windows_10.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0992/3481/files/60392163048.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0629/5196/files/websites_without_http.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 2

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_off000057c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x57C8 5348 bytes
SHA-256: c5227731748beac49fc8cb62f56d5525de1c1c18bac3adb13bfffcd7427cd0b3
font_01_sfnt_off000069e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69E8 14832 bytes
SHA-256: 69336658cc6fe03eec0315df6b67b58c57a067db843d454685f06a0040286451
font_02_sfnt_off0000926c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x926C 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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