Malicious PDF — malware analysis report

Static analysis result for SHA-256 317b9ebcfcf06ec8…

MALICIOUS

PDF

43.8 KB Created: 2020-10-29 07:49:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5279d6f4ec94c1fcc787cce036daaa04 SHA-1: 546ce70719a75607626822e9ab9e15596e74392b SHA-256: 317b9ebcfcf06ec81be58e7477f8bafb70105a3ee3fc06c9a301b1551a95ffd3
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with at least one identified as a malicious redirector. The document body, though partially obfuscated, contains the URL 'https://ttraff.cc/123?keyword=games+we+really+want+fnaf+2', which is also flagged as a malicious redirector. This suggests the primary goal is to direct users to malicious sites, likely for phishing or malware distribution.

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.cc/123?keyword=games+we+really+want+fnaf+2
    • https://xujaxivef.weebly.com/uploads/1/3/1/4/131438557/gavusepenebiket_bupubakiram.pdf
    • https://fupexorugukemig.weebly.com/uploads/1/3/0/8/130814763/9180737.pdf
    • https://cdn-cms.f-static.net/uploads/4368760/normal_5f8c24fb2a095.pdf
    • https://rojusonevupa.weebly.com/uploads/1/3/0/8/130814232/bizixutorabota-dexurirofo-pasudepugovudiz-nubusezozimolap.pdf
    • https://mogilifus.weebly.com/uploads/1/3/0/7/130739831/5401885.pdf
    • https://dirigesibujov.weebly.com/uploads/1/3/0/9/130969991/0a6df7e6e2408.pdf
    • https://cdn-cms.f-static.net/uploads/4377403/normal_5f8b29c6def02.pdf
    • https://cdn-cms.f-static.net/uploads/4372073/normal_5f8c3f4163eec.pdf
    • https://cdn-cms.f-static.net/uploads/4374520/normal_5f8ef8210966a.pdf
    • https://wodedofa.weebly.com/uploads/1/3/4/3/134320626/6470011.pdf
    • https://cdn-cms.f-static.net/uploads/4384296/normal_5f901b0ceb437.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/mozirolinitaje/kugituwanegedo.pdf
    • https://cdn.shopify.com/s/files/1/0497/8494/6850/files/rukidolod.pdf
    • https://s3.amazonaws.com/tajimipojimo/30435205848.pdf
    • https://uploads.strikinglycdn.com/files/983c4932-600a-474d-8599-38e951a8c60a/5636839130.pdf
    • https://uploads.strikinglycdn.com/files/78916a65-5264-43b5-bea9-e2cb6cf8253a/zifoluxepe.pdf
    • https://cdn.shopify.com/s/files/1/0459/8648/0285/files/visual_elements_of_a_graphic_novel.pdf
    • https://uploads.strikinglycdn.com/files/d8773901-05eb-4c13-8040-3f20c6e86620/7913707390.pdf
    • https://cdn.shopify.com/s/files/1/0476/4352/5286/files/dekaz.pdf
    • https://uploads.strikinglycdn.com/files/05829e38-0640-40bd-82b2-5f9eccdb9f4b/nier_automata_how_to_pet_pod.pdf
    • https://uploads.strikinglycdn.com/files/343ac972-07b7-4cfa-a8a8-71903cd64927/kibobi.pdf
    • https://cdn.shopify.com/s/files/1/0266/9671/2384/files/whatsapp_transparente_apk_ltima_versin.pdf
    • https://drive.google.com/file/d/0B-xENJ-pMOUGN0lSX2wzLUp4Z1U/viewFive
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006ba1.bin
94fd81c727d67b4d77aa583beee7a1aa37182747f336a7a07a8d8de23d491cfe
pdf-font-stream PDF embedded font (sfnt) at offset 0x6BA1 5268 bytes
font_01_sfnt_off00007d92.bin
a4b89567faac45f6e12e50897c108a73fe3c18621542b66c9478bf8a0d3d811f
pdf-font-stream PDF embedded font (sfnt) at offset 0x7D92 10932 bytes