Malicious PDF — malware analysis report

Static analysis result for SHA-256 885b418cac913b91…

MALICIOUS

PDF

52.6 KB Created: 2020-08-11 00:58:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e0ab09497486967405f653155f0e571b SHA-1: e2deaea28f5c12434c6a9434ff57f9bac92f33aa SHA-256: 885b418cac913b917c36ed2f5d1610489683417a004cc66fd222541a6fcf923e
234 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links designed to appear as legitimate downloads, but they redirect to a malicious SEO link farm. The primary redirector URL is https://ttraff.ru/pify?keyword=cahier+de+charge+de+logiciel+de+gestion+commerciale+pdf, which is flagged as malicious. The document also mentions password protection, suggesting a potential multi-stage attack where the user is tricked into downloading an archive and then prompted for a password.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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.ru/pify?keyword=cahier+de+charge+de+logiciel+de+gestion+commerciale+pdf In PDF document text
    • http://files.drawingacrossthelines.org/uploads/1/3/1/4/131408170/dexobugeredug-kefire-mezulilebufew-gamejaxozekidud.pdfIn PDF document text
    • http://files.lovinlifedeepcreek.com/uploads/1/3/1/4/131406826/buvakowekoguvuxapa.pdfIn PDF document text
    • http://files.destinationdancesb.com/uploads/1/3/0/9/130969169/d62a0e2ed84.pdfIn PDF document text
    • http://pujan.myporos.com/uploads/1/3/1/4/131409090/latonasifenorokasas.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/1/0428/7106/2684/files/34464037101.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/12729031526.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7470/7868/files/honeywell_th8110u1003_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2514/5760/files/75991747104.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3201/7058/files/vutajososam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9659/5870/files/2894043453.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9932/4580/files/84451677395.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1743/6327/files/40987748088.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4684/6107/files/suzidometuwepowudab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3531/0745/files/8912445375.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9534/1723/files/10422187066.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3243/7158/files/nugebeselat.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000089f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89F4 5476 bytes
SHA-256: 0b85cffa4a7013eaeabf8971e90161364c7e55ac8057acd1fdccb15d1f765a87
font_01_sfnt_off00009c6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9C6A 12312 bytes
SHA-256: b76dd3b56a21708e0060e05d415a01d4db12350aec1b97a8877fa8408a7ed550