Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0b4baa4d1294a0f…

MALICIOUS

PDF

41.6 KB Created: 2020-08-24 02:45:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0a706e0f8e42460d587246fd7a2a131a SHA-1: c2c7964934c7c7f84e64da947d09e2f353ddd453 SHA-256: e0b4baa4d1294a0f7cf0921a596291c5a59da0aa84eb5cf8b3b453b7fec7b999
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF was flagged by a critical heuristic for linking to known malicious redirector infrastructure, specifically 'ttraff.com'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, many hosted on 'cdn.shopify.com'. The ML classifier also strongly indicated maliciousness. The primary attack pattern involves redirecting users through malicious infrastructure, potentially 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.com/pify?keyword=solar+system+facts+sheet
    • http://dotipo.trailers4u.com/uploads/1/3/0/7/130775997/7920ab52f52d33b.pdf
    • http://veruwajit.trinahoadleyphotography.com/uploads/1/3/0/7/130739775/gumojemewa_nobemedemim.pdf
    • http://domutabu.tacomawinemerchants.com/uploads/1/3/0/7/130739309/jituperozuliv.pdf
    • http://files.sevicklaw.com/uploads/1/3/0/8/130874329/5508817.pdf
    • http://files.apexproductiongroup.co.uk/uploads/1/3/0/9/130969798/8187116.pdf
    • https://cdn.shopify.com/s/files/1/0427/7790/3263/files/mepagubujifofukerosisudu.pdf
    • https://cdn.shopify.com/s/files/1/0432/3383/7219/files/oscar_award_2020_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/3953/8851/files/supodevededogeta.pdf
    • https://cdn.shopify.com/s/files/1/0432/7656/6684/files/appointment_scheduler_google_forms.pdf
    • https://cdn.shopify.com/s/files/1/0429/8558/6849/files/74424721224.pdf
    • https://cdn.shopify.com/s/files/1/0432/5956/0094/files/marketing_exam_questions_and_answers.pdf
    • https://cdn.shopify.com/s/files/1/0431/7177/4615/files/46512664852.pdf
    • https://cdn.shopify.com/s/files/1/0429/1392/3228/files/tuwixogomezuxapepi.pdf
    • https://cdn.shopify.com/s/files/1/0429/8145/8069/files/xudumu.pdf
    • 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/
    • https://cdn.shopify.com/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006482.bin
9dfca72c1817fcf2c85f85c10426867c41f953d4079877a54d3f8b2392b7d173
pdf-font-stream PDF embedded font (sfnt) at offset 0x6482 5324 bytes
font_01_sfnt_off00007678.bin
c2c309b53b94457d04dff76255655da7b8c70853a589283c5c75bb56da9c3fad
pdf-font-stream PDF embedded font (sfnt) at offset 0x7678 10128 bytes