Malicious PDF — malware analysis report

Static analysis result for SHA-256 c22907eb60597dbb…

MALICIOUS

PDF

39.9 KB Created: 2020-11-03 04:47:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 2ab5ab306c4899442d2531c722c628f9 SHA-1: b478a436d7fbc7fa6713b96cd5d0505f58eab154 SHA-256: c22907eb60597dbb7a16a9c84432a1c10eff852596f456b0040bef5cebbb6c9d
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.club, which is likely intended to lead the user to a malicious site. The document body, though heavily obfuscated, contains the same URL and references a game, suggesting a lure. The presence of numerous other PDF links indicates a link farm, a common tactic for SEO poisoning or distributing malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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.club/123?keyword=pandemic+game+unblocked In PDF document text
    • https://daxuferawul.weebly.com/uploads/1/3/4/5/134592581/zisuwobitef.pdfIn PDF document text
    • https://fekudumubaf.weebly.com/uploads/1/3/2/6/132681201/90e2158853dc260.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/dobesogum/5331849779.pdfIn PDF document text
    • https://s3.amazonaws.com/wofaxil/lesomepazikifigu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0492/2654/7366/files/free_to_air_tv_guide_brisbane_ebroadcast.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a6c315cf-67ee-4058-b1b6-ef9b76fba613/83893959048.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1fe7a890-1251-4961-bbe9-7750ccef42d4/8112053277.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a93d0556-ae59-44ec-aed0-5cf5875c59c0/loduretetetavogapoke.pdfIn PDF document text
    • https://s3.amazonaws.com/digigitusuduk/conditional_progress_release_template.pdfIn PDF document text
    • https://s3.amazonaws.com/juxatop/do_no_harm_documentary_reddit.pdfIn PDF document text
    • https://s3.amazonaws.com/ropuba/92499239223.pdfIn PDF document text
    • https://s3.amazonaws.com/mulerux/67210529335.pdfIn PDF document text
    • https://s3.amazonaws.com/sigobija/what_do_pacific_northwest_tree_octopus_eat.pdfIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/manual_tortilla_roller.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005cde.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CDE 5192 bytes
SHA-256: d803c7f17007d22b27faf49002960dce63addc25f17c234d549cdccc081ad214
font_01_sfnt_off00006e7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E7B 10732 bytes
SHA-256: 60bd45e1e97690d828ffabe439a7d43ae7727c4a2ee67735d88aeb44d3b7d9c2

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