Malicious PDF — malware analysis report

Static analysis result for SHA-256 60debea6faf6e945…

MALICIOUS

PDF

72.7 KB Created: 2021-01-04 09:57:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: f73cde7cda467d327fe577c92a97e3b4 SHA-1: 520e417a30134672fd5f503a3098525bb3b2302f SHA-256: 60debea6faf6e945c367c53e0eb03b72ae7b64ca09c4b8f2de7c0dd6b9f59271
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a large number of external links, with one heuristic specifically identifying a 'PDF_SEO_LINK_FARM'. The primary malicious URL identified is trafftec.ru, which is likely part of a phishing or scam campaign. While no scripts were directly extracted, the presence of numerous external links suggests an attempt to redirect the user to malicious content, potentially leading to further compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafftec.ru/aws?utm_term=eclipse+jee++64+bit+zip PDF link annotation
    • https://xesinuvukuwufo.weebly.com/uploads/1/3/0/7/130776104/c60a88141.pdfIn PDF document text
    • https://pibiwija.weebly.com/uploads/1/3/4/8/134896476/wodogaxative.pdfIn PDF document text
    • https://mekuxiwefajup.weebly.com/uploads/1/3/0/7/130739023/2077263.pdfIn PDF document text
    • https://mizemetugez.weebly.com/uploads/1/3/4/3/134322353/gitaguragideki.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376098/normal_5fd64d8d5792b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370064/normal_5fa92b12083f0.pdfIn PDF document text
    • https://gudogetoji.weebly.com/uploads/1/3/4/6/134634169/folod-rotememixat-tipawifu-givimital.pdfIn PDF document text
    • https://jufukakoxojopop.weebly.com/uploads/1/3/4/3/134317893/7120742.pdfIn PDF document text
    • https://nefenupenarus.weebly.com/uploads/1/3/4/4/134476068/3851543.pdfIn PDF document text
    • https://zerimesatevig.weebly.com/uploads/1/3/4/8/134879836/sugopiniwajigoruwe.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/wazorixekunafob/9994346434.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/00c77dda-6faf-4790-9db5-32045aa7f5dd/toro_super_recycler_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/97d50736-f60a-4acc-aebc-38f60558b1a8/25121207549.pdfIn PDF document text
    • https://s3.amazonaws.com/bisiku/vavusamuwosogivulela.pdfIn PDF document text
    • https://s3.amazonaws.com/joterige/kesulusibujepilumipugotuk.pdfIn PDF document text
    • https://s3.amazonaws.com/welutizenop/texas_driving_manual_2019.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_off0000e05e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE05E 5084 bytes
SHA-256: 9f4606e2e71013e9c92c32d94f241b5d10bc2a11507cb82d2badc85b2406d429
font_01_sfnt_off0000f1d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1D5 10516 bytes
SHA-256: 31283bf8cde5daee97308a11de15e7138d6a8f14b28dc2cca0072dcb892f5727

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