Malicious PDF — malware analysis report

Static analysis result for SHA-256 ffafa334d8b92843…

MALICIOUS

PDF

44.9 KB Created: 2020-08-04 07:14:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7cb4d65b54131ca48a454ed5865c57a1 SHA-1: c535b731bc7283f1849055ebf437f82ba23f8ba6 SHA-256: ffafa334d8b92843ac2ceb5435494adbf14db2a11981ce5bab10a72a8bb195eb
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a critical heuristic indicating it links to known malicious redirector infrastructure. The document body, though malformed, contains text related to 'bidding process for construction projects pdf' and includes the malicious URL. This suggests a phishing attempt to lure users to a malicious site under the guise of a legitimate document. 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.ru/pify?keyword=bidding+process+for+construction+projects+pdf In PDF document text
    • http://files.rubysresidences.com/uploads/1/3/0/8/130874394/toloxi-piruv.pdfIn PDF document text
    • http://files.cambridgerugcleaning.com/uploads/1/3/1/4/131407138/7288648.pdfIn PDF document text
    • http://files.tollersatoakcreekfarms.com/uploads/1/3/1/4/131406518/f07f34303.pdfIn PDF document text
    • http://files.scvpta.org/uploads/1/3/1/0/131070457/pinezobu.pdfIn PDF document text
    • http://files.taylorspersonalcarehome.com/uploads/1/3/1/4/131453276/bozol_sawaseriwe.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/1/0433/5216/2462/files/mokatiwalabidoxofajila.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0085/5706/files/lakutusuzidi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7595/3049/files/padi_open_water_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9569/5265/files/97888573170.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8543/0945/files/linogesifav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3019/2039/files/toridobuzoweluwifu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5625/0525/files/tesisavalopona.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2133/4688/files/waxejojamer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1481/4885/files/sijimipumefi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2562/0374/files/35870578765.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 6

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_off00007053.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7053 5208 bytes
SHA-256: afd6daa24f5fdd3d7f9d7f7f5a363bdb14e24172bf0f0fdf0e81e49d928812ec
font_01_sfnt_off0000822c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x822C 10728 bytes
SHA-256: b740d627ab1729323ad675640bf7e4652f84b0c88cf9b08caf4dfa58a3d89456

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