Malicious PDF — malware analysis report

Static analysis result for SHA-256 035d24e1c9858a2b…

MALICIOUS

PDF

68.1 KB Created: 2020-08-04 01:41:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f74287115a52dadc485587509e2c85fb SHA-1: d8b9171845a722ee8bfa065630fe2d68521cee1f SHA-256: 035d24e1c9858a2b195cd2a429511fb63e6fceffe06de546f8625860021c96d1
194 Risk Score

Malware Insights

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

The PDF contains numerous links designed to appear as a link farm for SEO purposes, but they redirect to malicious infrastructure. The primary redirector URL is 'https://ttraff.ru/pify?keyword=sistema+de+calidad+total+tqm+pdf'. This suggests a phishing or scam attempt disguised as a free download, leveraging a link-farming technique to obscure the malicious destination. The ML classifier also strongly indicated maliciousness.

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=sistema+de+calidad+total+tqm+pdf In PDF document text
    • http://files.myphumc.com/uploads/1/3/0/8/130874451/8646049.pdfIn PDF document text
    • http://files.flowersfromthedead.com/uploads/1/3/1/4/131437005/mutuwafefatobe-nixebopim.pdfIn PDF document text
    • http://gozowiwo.jamesedwardbecton.com/uploads/1/3/1/4/131437508/vegivepepigo.pdfIn PDF document text
    • http://files.richardbrooksinvestigations.com/uploads/1/3/2/6/132683137/5dbcb2.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/1/0430/8058/1274/files/jaxinujazuvar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7803/2296/files/zekiwidofikubajofapu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/woziki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5539/8563/files/70190046998.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9851/4343/files/slam_walter_dean_meyers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9590/6721/files/86917217333.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3842/5767/files/wesowojigogikidad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5340/8675/files/pebabima.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4713/2068/files/byomkesh_bakshi_stories_in_english.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8353/8340/files/poison_ivy_killer_lowes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2314/6906/files/satagetatobak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7930/1288/files/alphabetical_list_of_countries.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1087/4777/files/70353658479.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 4

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_off0000c89d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC89D 5432 bytes
SHA-256: fb4899b6e515148681d95b669116ee240b84c59bb59360208372bb8a53357889
font_01_sfnt_off0000db0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB0A 11748 bytes
SHA-256: fc8b1b8bde97f074ea808b1fadcf59d0556257562e2e18df86167177ed498e45

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