Malicious PDF — malware analysis report

Static analysis result for SHA-256 34f7c889fbfc3902…

MALICIOUS

PDF

49.8 KB Created: 2020-08-17 05:29:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 44ca15141e90434d14f692a094169133 SHA-1: 70904e061e8ef397842e31dc8f108f080a900265 SHA-256: 34f7c889fbfc3902e2a7b3cf5311d1feda3cb6e5a7318d516aea8e86126ca232
202 Risk Score

Malware Insights

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

The PDF file contains heuristics indicating it is a malicious redirector and part of a link farm, disguised as an invoice or payment lure. The embedded URL, https://ttraff.ru/pify?keyword=china+customs+declaration+form, is a known malicious redirector. The document body, though heavily obfuscated, contains the same URL, reinforcing the lure.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=china+customs+declaration+form In PDF document text
    • http://files.vanagons.org/uploads/1/3/1/6/131606073/raferumotug-toliwabazemapa-fobuzalado.pdfIn PDF document text
    • http://bawiji.vanblues.com/uploads/1/3/1/3/131381886/libemoziwunuju_sidilutubekod.pdfIn PDF document text
    • http://tubot.alexcummingmusic.com/uploads/1/3/1/3/131383483/barexorafexojapiga.pdfIn PDF document text
    • http://roretizet.ceramics.se/uploads/1/3/2/6/132695569/3e692fc.pdfIn PDF document text
    • http://didisudox.danbonnell.com/uploads/1/3/1/6/131607600/ce0a43789064f.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/1/0432/6454/0835/files/66548367219.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7508/4193/files/bloodveld_osrs_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9433/4870/files/wiz_khalifa_albums.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7920/5018/files/28507095304.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2779/8944/files/65701794230.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3646/7623/files/amiodarona_biosintetica_bula.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5306/3063/files/caltrans_survey_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3533/6616/files/php_connect_to_mysql.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3764/6245/files/vopalotidepumimoziji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9227/9445/files/8198246677.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 3

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_off0000882c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x882C 5168 bytes
SHA-256: 06582a0ef19bccd3361733e6244816e8213af8ce12d2f987ae2685d1f2370f5b
font_01_sfnt_off0000997f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x997F 9592 bytes
SHA-256: 35cd113b13b1a12d60b574c9c322ddc84edf9fd07da4c7327d907deec58fd460

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