Malicious PDF — malware analysis report

Static analysis result for SHA-256 e4d45e1a70c0d646…

MALICIOUS

PDF

40.4 KB Created: 2020-10-05 03:20:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 1173dcd8643add3fa3251d0da68a3a3f SHA-1: c77d294f978f249e2f3c5a19934a9f0975d54bd9 SHA-256: e4d45e1a70c0d64681962cdc447cd3ada85c93c5a714904bcfdcf1c45b02afe0
94 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.link/pify?keyword=sugar+smacks+cereal+box'. The ML classifier also strongly flagged this PDF as malicious. Although no scripts were extracted, the presence of a malicious URL within the document body indicates an attempt to lure the user to a harmful site, likely for phishing or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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.link/pify?keyword=sugar+smacks+cereal+box In PDF document text
    • https://site-1039837.mozfiles.com/files/1039837/848021499.pdfIn PDF document text
    • https://site-1039210.mozfiles.com/files/1039210/82053616421.pdfIn PDF document text
    • https://site-1037125.mozfiles.com/files/1037125/suzatasovug.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/1/0487/0026/0502/files/witarupufafoderobekupilug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/2232/2328/files/rafoforebamilabopalazij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/6511/7334/files/love_nikki_chapter_12-3_princess_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/5274/6920/files/what_is_on_a_super_supreme_pizza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5035/2296/files/85903035674.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0460/6951/4404/files/one_does_not_simply_best_memes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b2c55d8f-144b-404f-a114-c07ac5344421/niwavewixuvalate.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9b61568c-7231-43dd-8295-96ee73a40577/subisozoxiragibi.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_off00005f49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F49 5496 bytes
SHA-256: ca51efbba3fc6ef2e105ccafdeade809b39cddbd7e94737b8cd62e8f4d5b6e8e
font_01_sfnt_off000071e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71E9 10300 bytes
SHA-256: 4e748e0248fec004d213c16587a7d2cfb3b36d595d94fe04426754d51c1dde26