Malicious PDF — malware analysis report

Static analysis result for SHA-256 9bded67ef9742b1f…

MALICIOUS

PDF

44.9 KB Created: 2020-08-23 04:48:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 32b90b60faf81f0a55033fd8c1837e4e SHA-1: fc693f8ab3a665dee92f71dd906410f5e02a56de SHA-256: 9bded67ef9742b1f2dff92bd6a84e72cb94d169e1b49f3855a8e1d94f41aeb51
194 Risk Score

Malware Insights

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

The PDF document was flagged by multiple critical heuristics for containing malicious redirector links and a large link farm. The ML classifier also strongly indicated maliciousness. The primary malicious URL identified is https://ttraff.ru/pify?keyword=reporting+log+transformed+data, which is likely used to redirect users to a malicious site. The document body contains obfuscated text and embedded URLs, further supporting the 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.ru/pify?keyword=reporting+log+transformed+data In PDF document text
    • http://fiwibeti.thehanssonlab.com/uploads/1/3/1/4/131410227/1fe0a801af73a.pdfIn PDF document text
    • http://files.spiritofexcellenceworldwide.com/uploads/1/3/0/8/130874469/d0a4486630b8.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/1/0437/7241/2055/files/kozodinufibiwaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0924/4316/files/48209613988.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9090/1144/files/marvel_encyclopedia_new_edition_2020_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7857/3475/files/56727186623.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8250/5628/files/westjet_app_for_older_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0923/5355/files/besame_mucho_guitar_sheet_music.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9291/7924/files/3444570151.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2965/9797/files/butchery_business_proposal.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000063ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63BA 5156 bytes
SHA-256: 4b0ad1b18811a18a681ac0400fffa1436af71522b204d62ef424453c5a4a10df
font_01_sfnt_off0000752b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x752B 10384 bytes
SHA-256: 1e524632de4bb7a5981f6a8001b5b74165722cf5f1591b114ae693ccdf0b3a73
font_02_sfnt_off0000989d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x989D 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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