Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e9d4b43bdd505dd…

MALICIOUS

PDF

40.1 KB Created: 2020-08-04 03:12:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d5492ad26fe7a13271f5e66626b04021 SHA-1: 6cb7b842b4c46a273dbb0bd3abc5de2615a21edc SHA-256: 8e9d4b43bdd505dd0e95825c37b8025a5907b836e56f95d2f614eabcf01133cd
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, which is further supported by the presence of numerous embedded URLs. The document body text, though partially corrupted, includes a URL that appears to be a lure for downloading a business communication PDF. The primary malicious URL is https://ttraff.cc/pify?keyword=business+communication+today+13th+edition+pdf+download, which likely leads to further 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.cc/pify?keyword=business+communication+today+13th+edition+pdf+download In PDF document text
    • http://files.bottomcleansg.com/uploads/1/3/1/4/131453199/1fe67b9e5.pdfIn PDF document text
    • http://files.diversityunitkncirg644.com/uploads/1/3/0/9/130969448/wuloju-xoxawojidapu.pdfIn PDF document text
    • http://files.doglivershunt.com/uploads/1/3/0/9/130969768/tobujifoperatobo.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/1/0433/5714/3205/files/8259862947.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0649/8728/files/mebavotonofopifupekovoged.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7091/4717/files/jetuzagofabav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8247/1837/files/nosiwepotifudeb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1848/4888/files/16083010527.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7381/4171/files/fisaja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6713/6408/files/73504487629.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9105/1161/files/fixugivogovevadeneresexu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1977/9742/files/dikobesiwoderonox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2065/6545/files/tufijitekikivebuzovu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5281/7832/files/27554508493.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 8

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_off00004fac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4FAC 5640 bytes
SHA-256: 92dc31847e4d6c31367eb9cbd41e6f750f120446470aa9943991dc761d5c3c3e
font_01_sfnt_off000062c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62C9 10184 bytes
SHA-256: eb1e61bbf04e7b5242484099c152db6c59f19033ae4db7123f814251ea6279f3
font_02_sfnt_off0000852e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x852E 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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