Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8199aff43ee51db…

MALICIOUS

PDF

63.6 KB Created: 2020-08-24 10:12:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4839993da0694288b6dd83ba290f0b74 SHA-1: ae1878c0c49cdbb1eaba11e6cb038064dbc7c603 SHA-256: e8199aff43ee51dbf251849414443379c7d0a6056566919bda94aa79c8df1e33
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=adsorption+kinetics+pdf'. It also exhibits characteristics of a PDF link farm, with numerous embedded links, many hosted on Shopify. The document body, though heavily obfuscated, contains the same redirector URL, suggesting the primary intent is to direct users to malicious infrastructure under the guise of providing a PDF on adsorption kinetics.

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=adsorption+kinetics+pdf In PDF document text
    • http://files.marcellamar.com/uploads/1/3/2/7/132710704/8492976.pdfIn PDF document text
    • http://files.firstxvperformance.com/uploads/1/3/1/0/131070389/2163678.pdfIn PDF document text
    • http://zagipogow.thebeautyofpaint.com/uploads/1/3/1/8/131871721/7cf0812e.pdfIn PDF document text
    • http://letibi.querubicamp.com/uploads/1/3/1/3/131383651/739b7834841e.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/1/0433/3849/8198/files/kituwajelifozebeb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4542/7102/files/2497669038.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5560/2078/files/62791208842.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3626/8949/files/john_deere_ct332.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4603/4846/files/asus_usb-_bt400.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2314/6906/files/causative_verbs_exercises_with_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8471/7979/files/44825663611.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8099/7269/files/tubumafatubeno.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5219/4202/files/45981941748.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn 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_off0000a523.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA523 4960 bytes
SHA-256: 0783f3604afe15f4b92984771b11cfc85367215d8f29100b4a9e1a1d51feaf74
font_01_sfnt_off0000b61c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB61C 11196 bytes
SHA-256: 8fd00756787473696935dc36e2a61c14fa8c3e731442008dfef37dff8f12a37e
font_02_sfnt_off0000dcaf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCAF 16144 bytes
SHA-256: f7282090e270060608fdc575ded0b184a97243f724fc845514d2e81390c10c7f

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