Malicious PDF — malware analysis report

Static analysis result for SHA-256 19c51e06a0c79fc1…

MALICIOUS

PDF

50.8 KB Created: 2020-08-19 06:07:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5957d86a8da1ba9d0e8f9328c101955d SHA-1: a6c7f291eea2e4287680fe4accb30026871c1f5d SHA-256: 19c51e06a0c79fc1ed926db5ce6997c2952a11f27139234952d96af9337ab0f8
194 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many pointing to benign Shopify domains, but one critical link to a known malicious redirector at ttraff.cc. This redirector is likely used to funnel victims to malicious content. The document body, though heavily obfuscated, contains the same malicious URL, reinforcing the lure. The presence of numerous PDF links suggests an attempt to manipulate search engine results or distribute content widely, characteristic of SEO poisoning or link farm tactics.

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=nhtsa+driver+distraction+guidelines+pdf In PDF document text
    • http://files.ncwnavhda.org/uploads/1/3/1/3/131381693/8b633016.pdfIn PDF document text
    • http://files.reveil-corporel.com/uploads/1/3/0/7/130739016/xivizode_jokojeka_gowosemabetora.pdfIn PDF document text
    • http://files.landartfinegardening.com/uploads/1/3/0/7/130740211/ce6cb397ac.pdfIn PDF document text
    • http://fukiri.ikinship.org/uploads/1/3/1/4/131407424/xubego_wovadabeti_zujuz_gosasevuxunoje.pdfIn PDF document text
    • http://kasex.aurora-patina.com/uploads/1/3/1/4/131407267/b6d75f8a.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/1/0437/6051/7269/files/wutugafubiforevaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8998/4678/files/basel_1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9474/6023/files/ambito_social_definicion.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5963/4591/files/curriculum_vitae_template_word_indonesia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/3331/8808/files/tilurop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6278/7237/files/jezozavogisinepigesidap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9240/1573/files/1429360064.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9426/9333/files/namutamolazenurepu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/19189676900.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4118/5189/files/54067943841.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0378/1015/files/longman_academic_writing_series_2_download.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_off00008872.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8872 5444 bytes
SHA-256: 2f6cfcb1350d513e0dcb81683326b6020967fde9dee0bc7619c06e110d3adbf9
font_01_sfnt_off00009afd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9AFD 10264 bytes
SHA-256: 06b1a79ee7c63b74502f2bfb19e1264e2e5203a5839903bf720f69a1742f57da

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