Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c9836840944ed08…

MALICIOUS

PDF

42.8 KB Created: 2020-08-20 00:03:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c4a2f1788f07c31bc0315cc88c8679dd SHA-1: fcc8aae798a9466d9aaa504e2bc148f470b0789f SHA-256: 8c9836840944ed083fd0dd53148e11d000c00dc81392448ac36ace0355ed02c0
194 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a malicious URL, disguised as an answer key for a poem. This is further supported by heuristics indicating a malicious redirector and a link farm. The document body contains the lure text and the malicious URL. No scripts were extracted from this sample.

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=figurative+language+poem+3+answer+key In PDF document text
    • http://tokusowa.remycenard.com/uploads/1/3/2/8/132814930/6fe029f5.pdfIn PDF document text
    • http://files.shortsandblorpsbynicky.com/uploads/1/3/1/1/131164311/9b2ac5cbebbbd.pdfIn PDF document text
    • http://files.therapytodaybh.com/uploads/1/3/1/8/131856917/vivokegur_putabojudorar_kelopo_wadotenalusi.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/1/0432/3583/6063/files/laboguk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5845/3918/files/50038451571.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6983/1323/files/hphs_academic_planning_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1423/3000/files/multivariable_calculus_7th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1769/9477/files/zofijusezogejafaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6444/9437/files/wumelin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0451/3293/9429/files/envision_math_6th_grade_textbook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5841/1158/files/nomad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4405/1864/files/loposowuzakofatala.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7916/2263/files/53866829345.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
🗂 Part of campaign: remycenard.com 3 samples

Related samples 3

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_off00006996.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6996 5576 bytes
SHA-256: 88db29d3fb4ff90dec2b76f119281aa74479ebce4c4d18fd0661100f1b187294
font_01_sfnt_off00007c96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C96 9920 bytes
SHA-256: 52b8d6cfc55c7ece7dc0c6666ec2f46371e233ea56d2525ca4db1b3a70343b07

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