Malicious PDF — malware analysis report

Static analysis result for SHA-256 33d0a0d8a554d615…

MALICIOUS

PDF

35.0 KB Created: 2020-08-28 13:51:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 10110f2047026ee408f3b5a1b1d630a2 SHA-1: f60d367c7a07240e7271dd2a3d5fdfdd7097778f SHA-256: 33d0a0d8a554d615acda586f02e8e9b0362b57b93e03d7f0dc7280535f031ac5
194 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, a common tactic for SEO manipulation or distributing malicious content. One critical heuristic identified a link to a known malicious redirector infrastructure at 'ttraff.cc'. While many other links point to benign Shopify domains, the presence of the malicious redirector and the sheer volume of links suggest a malicious intent, likely to drive traffic or distribute further malware. No scripts were extracted, and the document body was heavily obfuscated, limiting further analysis of the specific lure.

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=esl+comparative+adjectives+exercises In PDF document text
    • http://mawaloxuk.nicholasruscettaart.com/uploads/1/3/0/7/130775997/gikafibakag_motubimuf_pijagovulerod_sunipumapa.pdfIn PDF document text
    • http://kuxapefe.karuewachiraphotography.com/uploads/1/3/2/7/132712207/gulixiwiviwejor_regizowaxuluvob_nowotazozumuju_pubenubezemul.pdfIn PDF document text
    • http://disudape.gdshub.com/uploads/1/3/1/0/131070500/847083.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/1/0428/6598/3655/files/venulokaletezedo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8678/2369/files/dubusogiwali.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4376/6950/files/1978_cessna_172n_poh.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1705/1039/files/forskellige_former_for_billedsprog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2094/9416/files/lazitigovojedepikaroji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1448/7198/files/rexobuxetana.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9105/7058/files/band_of_brothers_free_mp4.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5725/9420/files/4297652448.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1451/9966/files/butter_chicken_recipe_video_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6080/3237/files/sat_math_answer_sheet.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 2

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_off00004bce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4BCE 5380 bytes
SHA-256: aefe13c5c023c7feed29a0bbb813e45793b4cc969261842383ef4043b1434677
font_01_sfnt_off00005e06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E06 9808 bytes
SHA-256: eecf2dc1130a89b61242dae78328b6ca2262448b7ee81095dbf991a129a627a0

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