Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a76895604b21eee…

MALICIOUS

PDF

34.0 KB Created: 2020-08-06 17:13:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7752c2db895269b53e6922459ca40c29 SHA-1: eb17376a3ff4aaf7f0e649205f19674fa5f996f5 SHA-256: 3a76895604b21eee09b1b032cb3ce0df7462e60e3bdff15d6439fb06569b7a1a
202 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one specifically identified as a malicious redirector. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' confirms this, pointing to 'https://ttraff.cc/pify?keyword=merge+pdf+online+free+unlimited'. Additionally, the 'PDF_SEO_LINK_FARM' heuristic indicates a large number of external links, suggesting a tactic to distribute malicious content or engage in SEO manipulation. The presence of a 'SE_DOWNLOAD_BUTTON' heuristic further supports the lure-based attack pattern.

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=merge+pdf+online+free+unlimited In PDF document text
    • http://files.actforveterans.org/uploads/1/3/0/9/130969686/4149650.pdfIn PDF document text
    • http://files.cancerresearchcenter.org/uploads/1/3/2/7/132712268/gomaza-donotijonun-bemuz.pdfIn PDF document text
    • http://files.josettecarroll.com/uploads/1/3/1/8/131871912/zurine_viduxow.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/1/0436/7728/6565/files/degatezijemoluvasopezunaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5547/1002/files/82294633739.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7849/2062/files/liwukesufavebifikititab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8607/8369/files/hey_angel_one_direction_leaked.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4420/8797/files/fogufazixewutajizi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6849/7823/files/23337276698.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6805/4949/files/icy_veins_unholy_dk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8245/7000/files/lidepig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0962/2691/files/39956312050.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6636/8935/files/rate_function_excel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1022/0447/files/15391364934.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000048ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x48EE 4976 bytes
SHA-256: d74f40b21de3a8e67458084ad604e5f2e3294a4a3f72072d238db4cb094df1c8
font_01_sfnt_off000059da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x59DA 9868 bytes
SHA-256: cc22222d6887a1c77871c4068cca886f461b6d2e4bc08a1531ca41e06e1b3d08

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