Malicious PDF — malware analysis report

Static analysis result for SHA-256 945d6f44e60e41e1…

MALICIOUS

PDF

41.7 KB Created: 2020-08-20 12:25:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e347671b28973e9c5e2fa56377e02821 SHA-1: 0a0a781802cc68091eecd9b776652596b6d9f622 SHA-256: 945d6f44e60e41e14c5dede62f57840e45f00c9aba2e43fd83e1e5aa77553384
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=climb+fansipan+without+guide'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, some of which are to potentially malicious domains. The ML classifier also strongly indicated maliciousness. The document body, though heavily obfuscated, contains the malicious URL and several other embedded URLs, suggesting a phishing or redirection attempt.

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=climb+fansipan+without+guide In PDF document text
    • http://files.retortsmplyjohn.com/uploads/1/3/2/6/132696171/rosikib.pdfIn PDF document text
    • http://dutemed.amazingstarsacademyunited.com/uploads/1/3/1/1/131164250/9705823.pdfIn PDF document text
    • http://luxut.you-md.com/uploads/1/3/1/4/131438216/bijabi.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/1/0436/8610/1145/files/history_of_graphical_user_interface.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2563/6248/files/41370172004.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3672/0798/files/xuginorenabapabugif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4950/0328/files/natajowogepowezil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2501/4684/files/38271120291.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7973/8278/files/bugapeboboxejozu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6775/2100/files/57925076901.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4219/4083/files/famosep.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 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005ce5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CE5 5496 bytes
SHA-256: c8e3d5a391c12ce64a3c006a535aa476ca4b54fd7e1a24f662199438c7d4088a
font_01_sfnt_off00006f72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F72 1800 bytes
SHA-256: e9a5a1f6ed95b1e3669933bb00002ad32a1708c3e0b735191cad5e02368a6c7d
font_02_sfnt_off000077ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77FF 9968 bytes
SHA-256: 2879aa6a9944f02e81d16c110ddc56abb6b70cfe96cf33dffb6a505e8d59223d

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