Malicious PDF — malware analysis report

Static analysis result for SHA-256 be1629eea69e0928…

MALICIOUS

PDF

48.1 KB Created: 2020-08-06 12:18:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3e1c09581af1a9ab82f33f79690c8003 SHA-1: 754e584e3a1d602a907969a2a1c2331b02db4c72 SHA-256: be1629eea69e0928911e128c341f6d1facd7e2428e33dd9e334bb69d21a565af
194 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with a critical heuristic firing for a malicious redirector link. The primary malicious URL identified is https://ttraff.ru/pify?keyword=candidose+digestive+pdf, which likely serves as a gateway to further malicious content. The document body, though heavily obfuscated, contains references to the redirector URL, reinforcing its role in the attack chain. No scripts were extracted, limiting the analysis of direct payload execution.

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=candidose+digestive+pdf In PDF document text
    • http://gulum.naildesignhouse.com/uploads/1/3/0/7/130775734/bazuvugijewikirix.pdfIn PDF document text
    • http://files.mamzette.com/uploads/1/3/1/4/131454355/pinenebofenumego.pdfIn PDF document text
    • http://files.localhoodnews.com/uploads/1/3/0/9/130969477/popuzefafer.pdfIn PDF document text
    • http://files.thegreatescape4u.com/uploads/1/3/1/3/131379042/seteneva.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8797/8913/files/mukebipe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5345/6289/files/www._paperlessemployee._com_target.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6377/9240/files/74392804337.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6925/1492/files/77695013740.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9508/1625/files/najorukizawevilawixugo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0397/6614/files/abbyy_transformer_3._0_full_mega.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6705/7063/files/52219719761.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9222/9787/files/62033321483.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3825/2954/files/alimentation_definition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5152/4008/files/68213552585.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9774/2750/files/29313531858.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3699/9831/files/dolaponezodipatu.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000070ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70AD 4952 bytes
SHA-256: fca8a957c41670f4e1dfe42383aa1739d2c4e6f02a862b3e3a28d2e717899897
font_01_sfnt_off000081ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81AB 10416 bytes
SHA-256: 558697bdcd51f51d80b94309d59ece53913471522bbafda44cd010da618b0c19
font_02_sfnt_off0000a50c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA50C 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176