Malicious PDF — malware analysis report

Static analysis result for SHA-256 c4867fb0277eeed0…

MALICIOUS

PDF

39.7 KB Created: 2020-08-22 11:41:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5c2777ef305e2ca29013cc0d279773ad SHA-1: d148013028765a63ffc3a8c0322f490b005bfdb1 SHA-256: c4867fb0277eeed04e73303101faf72d437fe85e2584c8f0135422c62d95c843
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, pointing to 'ttraff.com'. This URL is presented to the user, likely as a lure. The document also contains a PDF link farm, with numerous links to PDFs hosted on Shopify and other domains, suggesting an attempt to distribute or obscure malicious content. 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.com/pify?keyword=invisible+inc+draco+guide In PDF document text
    • http://files.chantelclucier.com/uploads/1/3/0/9/130969831/vibavelovorupu.pdfIn PDF document text
    • http://kekegu.bangkokrepublik.co/uploads/1/3/1/1/131164273/1878559.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/1/0440/8341/3142/files/canadian_citizenship_exam_questions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4819/6506/files/chest_vte_prophylaxis_guidelines_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7702/6463/files/rinuxajowekizepaxatup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8127/7342/files/75498570730.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3005/2005/files/cancionero_para_guitarra_folklore_argentino.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1313/4757/files/66280716351.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8731/2536/files/30215400905.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6203/4589/files/descargar_diccionario_biblico_reina_valera_1960_gratis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7599/3764/files/99606228036.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2642/2687/files/77872189747.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9212/3560/files/62820292286.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5802/1027/files/gobanuseti.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: jlbinc.com 3 samples

Related samples 1

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_off00005d74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D74 5244 bytes
SHA-256: 5d9a59f6435dd1b7a3eb82426fdd291c15a3d3e2cbaaf030dd87722a6d2c558d
font_01_sfnt_off00006f48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F48 10192 bytes
SHA-256: 9dc1b7f808c1455213fa62a4c060259757d026dc6062edd0eeed7ea51023a387

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