Malicious PDF — malware analysis report

Static analysis result for SHA-256 c54096ce7e64f7de…

MALICIOUS

PDF

59.0 KB Created: 2020-08-27 13:48:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9bd46979e337a64bb0538faa1ae08537 SHA-1: d0d798891f6ada79fb20a13cf4b134bb86a5558a SHA-256: c54096ce7e64f7de1e59fa474e46a96dd6be66419e08dd9f6cf27d4d2eb1594b
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, specifically 'https://ttraff.cc/pify?keyword=clasificacion+del+mouse'. The document body, though heavily obfuscated, contains this same URL, suggesting it is the primary lure. The presence of a large number of external PDF links also indicates a link farm, a common tactic for SEO poisoning or distributing malicious content. The ML classifier strongly supports the malicious verdict.

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=clasificacion+del+mouse In PDF document text
    • http://zowubexez.lenoircountyshrineclub.com/uploads/1/3/1/4/131406390/bobowibamopivuruvo.pdfIn PDF document text
    • http://files.dileoenglish11h.com/uploads/1/3/2/3/132303310/jubip-wupotukonajufu.pdfIn PDF document text
    • http://files.chant-elle.com/uploads/1/3/0/7/130739593/2543385.pdfIn PDF document text
    • http://files.stefanobazzano.com/uploads/1/3/0/7/130776069/pegutawoxibojov-gosikirematolij.pdfIn PDF document text
    • http://files.eastviewhshockey.com/uploads/1/3/0/7/130740123/9913df9157f890e.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/1/0431/9592/4637/files/futewekevunobikesonojow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9085/3541/files/rozumupunibexafoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7108/6492/files/xudafewaneramubis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4509/3533/files/sarokobenidasepuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5637/3659/files/ordinal_numbers_dates_exercises.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9961/9492/files/21709275159.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9423/7589/files/15964457724.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2860/3295/files/tropical_storm_karen_forms.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3957/2643/files/vinebonuguxiwuzasexutop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/7084/0981/files/vernier_caliper_zero_error_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4726/3131/files/57121318073.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_off0000a671.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA671 4976 bytes
SHA-256: a7143b3f94035721b6dbc648bca9bf820b329d3ce520ed3aa5222820855b3537
font_01_sfnt_off0000b744.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB744 11848 bytes
SHA-256: d8144c04fd2c51cad4a867daf42d3269d6e8bb17a6c22274bc63923430554b19

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