Malicious PDF — malware analysis report

Static analysis result for SHA-256 0475fcf2b60b170d…

MALICIOUS

PDF

57.2 KB Created: 2020-08-04 08:58:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 561cd9632c9069bd56ad0867c35487df SHA-1: 4a09ba95e6e943697cb90d51258c4ed81130bddb SHA-256: 0475fcf2b60b170d4d16c3a0771bde5984700448d62b54eb82224d14f7425906
194 Risk Score

Malware Insights

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

The PDF contains numerous links designed to create an SEO link farm, directing users through a redirector to potentially malicious content. The primary redirector URL is https://ttraff.ru/pify?keyword=bobina+de+tesla+pdf+unam. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest an attempt to drive traffic to malicious infrastructure, likely for phishing or malware distribution.

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.ru/pify?keyword=bobina+de+tesla+pdf+unam In PDF document text
    • http://files.thurstoncountyrw.org/uploads/1/3/0/7/130775647/30e2441e722b.pdfIn PDF document text
    • http://files.goodandgraciousco.com/uploads/1/3/1/8/131857304/1148707.pdfIn PDF document text
    • http://files.horrortourers.com/uploads/1/3/1/6/131606056/d5036.pdfIn PDF document text
    • http://files.cpasgc.com/uploads/1/3/1/4/131438758/8467879.pdfIn PDF document text
    • http://vanidud.zombodroid.com/uploads/1/3/0/8/130874522/gulijopojib-fogagaxekogago.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/1/0437/7323/1258/files/18614228703.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/7868051279.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9536/7585/files/32330359679.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8360/4903/files/99980705900.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1056/3994/files/7505255776.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1172/6750/files/luwok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6918/4931/files/mupenukamaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0464/9884/files/semuvopufonaban.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/1860/5976/files/mesodewemefatoxafem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/73633131036.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7087/1970/files/justin_beiber_sorry_mp3.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5331/8306/files/8394428704.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008945.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8945 5280 bytes
SHA-256: 41a8d705fb49bdf2ebe157a54a917e884245ec3f60ecfebb814d9e6a252e0e88
font_01_sfnt_off00009b28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9B28 11604 bytes
SHA-256: e380070bfe3b37a9111efd84766b4a389f063516e9ba5a8c5ad4325a237e8613
font_02_sfnt_off0000c0f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC0F2 16204 bytes
SHA-256: c988415812f594187b0a0ed75dc52802e798e1695b49bd300f8412a65040a449