Malicious PDF — malware analysis report

Static analysis result for SHA-256 38fb5fe1b9eda05b…

MALICIOUS

PDF

62.3 KB Created: 2020-10-02 21:12:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: 5a46caadafb75b05a0b434f3ad3edf7e SHA-1: 7d7de7be14a68103c7df3a8aa16f549a3aebb873 SHA-256: 38fb5fe1b9eda05b01206337307cda169283e15919a5a715b8b0923a86a9bad3
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one specific URL, 'https://ttraff.club/pify?keyword=magic+holy+symbol+pathfinder', is flagged as a malicious redirector. This suggests the document is part of a link farm designed to lure users to malicious sites, likely for phishing or malware delivery. The ML classifier also strongly indicated maliciousness.

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/pify?keyword=magic+holy+symbol+pathfinder In PDF document text
    • https://site-1038442.mozfiles.com/files/1038442/18676509167.pdfIn PDF document text
    • https://site-1037839.mozfiles.com/files/1037839/zasower.pdfIn PDF document text
    • https://site-1037166.mozfiles.com/files/1037166/37410565638.pdfIn PDF document text
    • https://site-1036944.mozfiles.com/files/1036944/limajekekafipu.pdfIn PDF document text
    • https://site-1037130.mozfiles.com/files/1037130/riribenisariwixumavut.pdfIn PDF document text
    • https://site-1038884.mozfiles.com/files/1038884/rotogunonisejo.pdfIn PDF document text
    • https://site-1036722.mozfiles.com/files/1036722/354285633.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/1/0469/9232/6808/files/2864417591.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/6901/7763/files/college_algebra_and_trigonometry_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/6573/2003/files/the_darkness_that_comes_before_amazon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7033/8725/files/simojogoko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3532/0742/files/15276539546.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/2851/5496/files/pokemon_red_rescue_team_starter_guide.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a94b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA94B 5604 bytes
SHA-256: 964daaf2b6649b9f4a74968f03918e01bb55da4ab50598822e65296acb5f3229
font_01_sfnt_off0000bc31.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC31 9964 bytes
SHA-256: eeb56ff54327345bf05ea98be0cdc4cffbb7e88104a14930fc44bbae58ecac57
font_02_sfnt_off0000de5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE5F 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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