Malicious PDF — malware analysis report

Static analysis result for SHA-256 8645f55e53894a28…

MALICIOUS

PDF

44.7 KB Created: 2020-08-24 22:11:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6c4ba6d22723e8cfbe95fb863805ccc2 SHA-1: 844d0c44316e78cfeaee5c6f15f1f462e18ce214 SHA-256: 8645f55e53894a287e4555d08c8be92e010d63185136d4fb3abc3cd947ff9ca5
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded links, many pointing to a redirector service (ttraff.com) that is flagged as malicious. The document body, though heavily obfuscated, contains the same redirector URL, suggesting a phishing or scam lure. The presence of a link farm and redirector indicates an attempt to drive traffic to malicious infrastructure, likely for further exploitation or credential harvesting.

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=business+english+words+with+meaning+pdf In PDF document text
    • http://files.intermodalmechanics.com/uploads/1/3/0/8/130874154/310728.pdfIn PDF document text
    • http://files.doorbeopen.com/uploads/1/3/0/8/130814718/jepalujopefasuli.pdfIn PDF document text
    • http://nozatebi.campatgalilee.org/uploads/1/3/1/0/131070161/5525859.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/1/0427/6381/3020/files/5603978190.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5027/0869/files/3424471972.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4122/4861/files/oceans_chords_in_c.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7341/3032/files/international_arbitration_law_and_practice.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7070/9142/files/tinkers_construct_reinforced.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2903/5158/files/79317017192.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/24375498268.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4509/3533/files/zaxemenu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2060/6885/files/59355323875.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0378/1015/files/97716097399.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2479/3245/files/breaking_into_wall_street_financial_modeling.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3293/6605/files/87862791796.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 3

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_off0000715f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x715F 5596 bytes
SHA-256: d07737aadf3109ef523a5b899a81ca17dce0a8a965e8209ca031da5e9711210b
font_01_sfnt_off00008443.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8443 9836 bytes
SHA-256: e29c9b617b37364c5ea6a54fb26e763a8b232a20da2fceee4d9b0fca2541627c

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