Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b41b5b06c68da54…

MALICIOUS

PDF

49.3 KB Created: 2020-10-10 17:45:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 471091d3bcb0b68d5c7a09d2e75196f6 SHA-1: 88e22091c2d2f28fc6d799cf80349b73bd09bbd4 SHA-256: 0b41b5b06c68da54f48000431d72c24c242cd5b14833e40a8c240b3367434083
154 Risk Score

Malware Insights

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

This PDF file contains a large number of embedded links, many of which point to a redirector service. The primary malicious URL identified is https://ttraff.club/pify?keyword=rival+rebels+mod+pack, which is likely intended to lure users into downloading malicious content. The PDF structure and the presence of numerous external links suggest an attempt to manipulate users into visiting potentially harmful websites, possibly as part of a phishing or malware distribution scheme.

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=rival+rebels+mod+pack In PDF document text
    • https://site-1039886.mozfiles.com/files/1039886/nerokofuro.pdfIn PDF document text
    • https://site-1038650.mozfiles.com/files/1038650/44154291009.pdfIn PDF document text
    • https://site-1037850.mozfiles.com/files/1037850/mikoroluzavalepatizo.pdfIn PDF document text
    • https://site-1040084.mozfiles.com/files/1040084/zuwasoxof.pdfIn PDF document text
    • https://site-1039217.mozfiles.com/files/1039217/bowurazuforipajab.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/1/0427/9864/5404/files/51287819394.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/6968/8994/files/rca_25055re1_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0475/9276/7644/files/metedopiwutotalesu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/6537/9489/files/35336535284.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0477/2449/5004/files/vemiluperaxokipuko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8812/4830/files/gta_4_lcpdfr.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7259/4844/files/bed_buddy_back_wrap_australia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8143/3242/files/venkateswara_swamy_govinda_namalu_in_telugu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0492/8143/3756/files/signs_signals_and_codes_merit_badge_virtual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3116/7137/files/3334184925.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7333/0586/files/types_of_werewolves_dresden.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1664/0923/files/4740867954.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_off000082e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82E4 5488 bytes
SHA-256: 16efade7d2793b611e6558128692559d086a20f832c39ae47551dd241b079a67
font_01_sfnt_off00009579.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9579 10184 bytes
SHA-256: 6d8988be41078d9690f57da57cab4425caf28570d6c89678159cfd6423210ccf

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