Malicious PDF — malware analysis report

Static analysis result for SHA-256 06c646841c6e78a3…

MALICIOUS

PDF

68.2 KB Created: 2020-08-11 08:13:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2591e1ab3bd1407965c1f1dab51cf825 SHA-1: 11b3025dd8823eac6ad65c8656a28a1192ad9942 SHA-256: 06c646841c6e78a31613fa137b28d0a71237cb4b25f130124f3c41bb16c1b229
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to a redirector service at 'ttraff.ru'. This redirector is associated with malicious activity and is likely used to host or deliver further malicious content. The document body, though heavily obfuscated, contains the same URL, suggesting it's the primary lure. The presence of multiple PDF links and the ML classifier output 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.ru/pify?keyword=barium+electron+configuration+spdf In PDF document text
    • http://dagapo.desertdew.net/uploads/1/3/1/6/131606027/ad18f6dde39.pdfIn PDF document text
    • http://files.hunyuansingapore.com/uploads/1/3/1/3/131383777/2132629.pdfIn PDF document text
    • http://raxolaxom.prudencemaltby.com/uploads/1/3/0/8/130813420/54eb27.pdfIn PDF document text
    • http://files.yvonnesthemeparties.com/uploads/1/3/2/6/132696044/c4c414.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/1/0429/1251/4201/files/vagiloxolewepo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gizuvesadumewagetikuxumut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5300/6494/files/nuzid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7079/7462/files/breath_control_exercises_for_singers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6917/8017/files/silmarillion_ainulindale.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2544/9628/files/dudisozonubufe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3271/4139/files/cantico_delle_creature_spartito.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9372/1255/files/bis_feral_druid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4490/5884/files/dupos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1165/3277/files/new_english_file_beginner_3rd_edition_teacher_s_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2052/5469/files/pokemon_go_can_t_authenticate.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
🗂 Part of campaign: desertdew.net 9 samples

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b4e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB4E7 5404 bytes
SHA-256: 9c5e3f158a2e0d342069d7d7ca431e2ad6f4d9d24818912c97564861850b1963
font_01_sfnt_off0000c72e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC72E 14764 bytes
SHA-256: beda5cca5cbd2649d8c44da4ef7d1f32cfc79cf3ed0d5618a57bacb26dd6fd87
font_02_sfnt_off0000f530.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF530 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361