Malicious PDF — malware analysis report

Static analysis result for SHA-256 a926677c598a777c…

MALICIOUS

PDF

36.9 KB Created: 2020-08-13 11:01:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1633cf4d148090b53235bfc1c76d0b49 SHA-1: e9c16c9cff15790ca28bc7a7dd7b854f7a5ee54f SHA-256: a926677c598a777c31c779a1fb9fa582433809da1db5f2c00c12120cf1d0d834
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, including a critical redirector link to ttraff.com, suggesting a link farm or phishing campaign. The ML classifier also strongly indicated maliciousness. No scripts were extracted, but the sheer volume of outbound links points to a delivery mechanism for 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/wb?keyword=leybold%20trivac%20s8b%20manual In PDF document text
    • http://files.andrewfitz.net/uploads/1/3/2/6/132695874/8727091.pdfIn PDF document text
    • http://tetebezu.sscoinworks.com/uploads/1/3/1/6/131636725/2663249.pdfIn PDF document text
    • http://files.justanhrgirl.com/uploads/1/3/1/3/131380213/tixobeboz-pirugamom-notopenoru-zugutolivex.pdfIn PDF document text
    • http://wosom.valhallavet.com/uploads/1/3/1/0/131069934/vemapu_wovamitazaretan_gituj.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/1/0433/0687/7080/files/kividerinogofigizunewif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0445/6952/6436/files/varicose_veins_during_pregnancy.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1423/4017/files/93931852748.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2770/1655/files/11442645367.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3531/0752/files/joyeux_noel_meaning.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8254/7361/files/ladujenefimu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6462/3265/files/nagedupuveribodivulagubiw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1659/3312/files/zesuxax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8993/5002/files/ielts_speaking_topic_vocabulary_20_topics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1270/1854/files/24040267144.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3055/2474/files/tatkal_railway_ticket_booking_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/93616534700.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4410/1544/files/tavidotajoxuzogiv.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 7

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_off00004993.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4993 5520 bytes
SHA-256: 455d4f618b808de07b1830abfba507b641cdef288934724b6d9dc90420e86450
font_01_sfnt_off00005c41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C41 13424 bytes
SHA-256: a6e38f012b40b6a773852a0817b998a56d3ff3e1093fc0c7e23b2ed3e562c1f6

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