Malicious PDF — malware analysis report

Static analysis result for SHA-256 4209ae31331e88e3…

MALICIOUS

PDF

41.1 KB Created: 2020-08-13 23:55:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d4473122078fbf93a7447320ccdd22af SHA-1: 0f24758370cacc57cb6a5be309c78fbe9c8560d3 SHA-256: 4209ae31331e88e37f24affc1b4e26973d932e4ee2e21843eddc29fd900d0c43
194 Risk Score

Malware Insights

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

The PDF document was flagged by a machine learning classifier and contains a critical heuristic indicating it links to known malicious redirector infrastructure. It also exhibits characteristics of a PDF link farm, with numerous embedded URLs pointing to external PDF files. The primary malicious URL identified is https://ttraff.com/pify?keyword=free+editable+infographic+template, which is likely used to redirect users to a malicious site. The document body itself is heavily obfuscated and contains embedded URLs.

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=free+editable+infographic+template In PDF document text
    • http://files.karenrosasco.com/uploads/1/3/0/7/130776158/rewuwodala.pdfIn PDF document text
    • http://files.photorevel.com/uploads/1/3/0/7/130738779/jekutagexav.pdfIn PDF document text
    • http://files.stitchingfitchic.com/uploads/1/3/2/7/132740285/45c888e9.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/1/0427/5775/0951/files/lipulozobilijubid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4485/5194/files/brickmania_instructions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4211/1650/files/34270975335.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3217/2965/files/zuwisenemajoveguziv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0978/5499/files/mabedokawub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8812/4830/files/xedilifapujizepajog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/somerurunem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1573/2376/files/24924421034.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4976/3487/files/86022658871.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1011/3186/files/bing_maps_bird_s_eye_view.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8573/9670/files/amharic_bible_teaching.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4474/8950/files/xumodula.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3239/5423/files/47808822982.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 5

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_off00006275.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6275 5484 bytes
SHA-256: ecf5195356ee49f28b34adcfb7e4ae95e208725c9cbda5ababff81f7cde4133e
font_01_sfnt_off000074ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74EF 9988 bytes
SHA-256: 30b43f34d0ad7b43672e92da0cb460cafe7b081b7e4cf833437547d41b6f368b

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