Malicious PDF — malware analysis report

Static analysis result for SHA-256 554ec0209ee814ce…

MALICIOUS

PDF

41.5 KB Created: 2020-08-04 19:05:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fe81c6eb9542906b591f1d5d8365c98d SHA-1: df8bf418ab00dbc9f115d4de8c70c87f1384dcdc SHA-256: 554ec0209ee814ce65a34cadf8ba0edfffe36dca5639243f4752274f7da8558e
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on various domains. One of the primary links, 'https://ttraff.cc/pify?keyword=integral+membrane+proteins+pdf', is flagged as malicious. This suggests a link farm or SEO poisoning attack, where the document is designed to redirect users to malicious infrastructure, likely for phishing or malware distribution.

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=integral+membrane+proteins+pdf In PDF document text
    • http://files.jlhopewindsofpoetry.com/uploads/1/3/1/4/131438676/4988529.pdfIn PDF document text
    • http://files.x-ovarvs.com/uploads/1/3/1/3/131383934/limogirozo-ritilemimedipi.pdfIn PDF document text
    • http://files.wanderingalchemistjuiceco.com/uploads/1/3/0/7/130776308/01b35c6f7fd.pdfIn PDF document text
    • http://files.haccc.org/uploads/1/3/2/7/132712207/taxujunetabar-fofogume-ravigadotoke-zarud.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/1/0428/2109/1484/files/vozatisakulaserob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4944/1688/files/3041245438.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4066/7810/files/amazon_save_for_later.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/57790570823.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7427/2924/files/ff14_macro_commands.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9081/2821/files/pizejujodazarabozeni.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9240/1573/files/69686490167.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1909/2647/files/back_propagation_neural_network_example.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2958/4293/files/10725067210.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8688/9625/files/kopanerepekama.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1903/5033/files/gitevibukuxaba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6842/2309/files/xatedujewegerolatekexu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3367/4396/files/41278596311.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2068/9306/files/1220604497.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 6

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_off00006428.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6428 5440 bytes
SHA-256: 277c1e8e5c77bcede174c59a4458ee8639a9c69c07f326b34c05f2ec8ff12b5f
font_01_sfnt_off0000768c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x768C 10176 bytes
SHA-256: 2319fb15c5615b56f824bf403d650692276dcfaf15bc9f4230238c49dd686fe2

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