Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2388a6a34f44c16…

MALICIOUS

PDF

40.9 KB Created: 2020-08-04 00:44:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 55ec4edce8a6b555c3dd18449c650af9 SHA-1: c740fa571c9511e713f96e6cf48e0caf613a224a SHA-256: c2388a6a34f44c16d7c5feab1e8eebdbce72309db626ad3c9704879e7c22c367
194 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=quimica+fisica+peter+atkins+pdf'. This indicates the document's primary purpose is to redirect users to potentially harmful content. The presence of a PDF link farm heuristic further supports the malicious intent, suggesting an attempt to distribute malicious links or content disguised as legitimate documents.

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=quimica+fisica+peter+atkins+pdf In PDF document text
    • http://files.ivoryemily.com/uploads/1/3/2/3/132303407/1929298.pdfIn PDF document text
    • http://files.rascalmartinez.com/uploads/1/3/0/8/130814666/3740052.pdfIn PDF document text
    • http://files.frenchiesofthecarolinas.com/uploads/1/3/1/3/131383973/jekobapobedawet.pdfIn PDF document text
    • http://files.sturtmoorbuhunds.com/uploads/1/3/2/7/132712315/9875414.pdfIn PDF document text
    • http://files.bellesandbeausball.com/uploads/1/3/1/0/131070692/pabadazojipekinute.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/1/0430/8038/4674/files/conceptual_physics_teacher_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3006/8894/files/85662268630.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7922/1919/files/real_mathematical_analysis_pugh_solutions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6137/1290/files/24725369732.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0401/0389/files/35808094519.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1809/0653/files/58866617590.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9731/7783/files/72213357058.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4251/2802/files/citizen_eco_drive_skyhawk_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7507/6258/files/pabuze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0445/9102/2244/files/stardew_valley_salad.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000606c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x606C 5392 bytes
SHA-256: d177e92aae2adc083d76d2b8b73e4e1a2cc59ba15670f80d0f34a1163eb7f6f0
font_01_sfnt_off000072af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72AF 10716 bytes
SHA-256: 24da958e1125f5ddcdd7414d1e8ecf001197bc3575672f562a92f86d6985dd32

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