Malicious PDF — malware analysis report

Static analysis result for SHA-256 603cac7f3beca150…

MALICIOUS

PDF

47.0 KB Created: 2020-10-30 15:07:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 57602d5c17451fbb707c684af6180221 SHA-1: cd48a65b9b310b473417669f5eb4e8b8c377e9d7 SHA-256: 603cac7f3beca150f03d2047c72e830049adfbcc62c118fad66e66289eb17e67
194 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains multiple embedded links, with a critical heuristic firing indicating it links to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the URL 'https://ggtraff.ru/aws?keyword=persona+4+fishing+red+goldfish', which is also flagged as a malicious redirector. This suggests the primary purpose is to redirect users to malicious sites, likely for phishing or to download further malware.

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://ggtraff.ru/aws?keyword=persona+4+fishing+red+goldfish In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366304/normal_5f88b199d0e1e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388060/normal_5f8e4e1f5faae.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/7ae7625d-8dfb-4427-a216-020ee9eb2ea2/13685454552.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0268/7657/5934/files/datagiwelanof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0505/7196/8680/files/kijang_innova_tahun_2020_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0494/0100/4199/files/h96_max_plus_firmware.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d76f8c6c-9fcd-47e2-bf2c-5157533ba64f/rulitufiwo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/0310/0313/files/56158526048.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/6780/8190/files/munchkin_anywhere_bottle_warmer_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3732/5462/files/vigolisudefozi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5910/9279/files/14229493886.pdfIn PDF document text
    • https://s3.amazonaws.com/rijaliwiguvex/23749902725.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0493/7357/7375/files/nike_fuelband_se_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files/juzozigedawi.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 2

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_off00006585.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6585 5344 bytes
SHA-256: 891e74533e7cde2d1a2694ece0436f739e572e410c5c59f242ba15b5b3b6e946
font_01_sfnt_off00007817.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7817 5256 bytes
SHA-256: 5ffe535de34fe38dd018c58edb86f9c7a4596e930cba79a6b07d9a6f2b79c230
font_02_sfnt_off000089f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89F8 10708 bytes
SHA-256: 9fe5eb9cd12979b9286e0eac43e7dabcd4682df8da8033d772710052c61d80ea

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