Malicious PDF — malware analysis report

Static analysis result for SHA-256 05fac91c67d187ef…

MALICIOUS

PDF

47.4 KB Created: 2020-08-10 08:44:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b726a0f979337e935faa2e4c07860241 SHA-1: a54c3d92ea8d4e9efab127a7daa266b5d5348a11 SHA-256: 05fac91c67d187ef943ed8f27a27f8996b42c9815ba151b324c89bb14e490778
194 Risk Score

Malware Insights

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

The PDF contains numerous links designed to appear as legitimate PDF downloads, but they redirect to a malicious URL (ttraff.cc). This is a common tactic for phishing or malware distribution, often referred to as an SEO link farm or free-download phishing. The embedded URLs and the ML classifier strongly indicate malicious intent.

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=air+pollution+causes+and+control+pdf In PDF document text
    • http://files.cabincreekfarmstudio.com/uploads/1/3/1/3/131379939/vetiludasokozana.pdfIn PDF document text
    • http://files.swpahro.com/uploads/1/3/0/8/130813095/5456126.pdfIn PDF document text
    • http://doxadesam.sascwa.org/uploads/1/3/1/1/131163635/ruwumurofoxazijagowa.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/1/0427/9664/6556/files/xigitilomu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4319/1969/files/zorubanenuxaki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/7708/0990/files/pupin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0658/3203/files/dipon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0118/4417/files/tetibipeva.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8362/0767/files/64806606194.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2380/9187/files/39742839493.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3057/6278/files/acetazolamida_mal_de_altura.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2606/9157/files/86116007789.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5525/9560/files/ranezaxijunomena.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7925/4694/files/40219259489.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3630/9666/files/fiwupivuzu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7369/2063/files/69964862369.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 5

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_off00007b8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B8C 5140 bytes
SHA-256: c771d0b5e04f88044c33e6dec9363c9e88e7fccf1716764ee7c42915f4efa203
font_01_sfnt_off00008d16.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D16 10508 bytes
SHA-256: cbb4de971aac92f83a701965616b53a6d9e36decb52096395f3e8bf7b49e67e8

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