Malicious PDF — malware analysis report

Static analysis result for SHA-256 01f232ad207f8001…

MALICIOUS

PDF

45.9 KB Created: 2020-08-25 09:13:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 575e36930d189bfcfb30df1c7a329944 SHA-1: 38a9f112b67bb60743c5b1c16c956930b3b081c0 SHA-256: 01f232ad207f8001b1b39486c70e4bffab075d47ed695251d4766670c29e6964
154 Risk Score

Malware Insights

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

The PDF contains a link farm with 22 external links, including a known malicious redirector at 'https://ttraff.ru/pify?keyword=flight+simulator+x++for+windows+10'. The document body, though heavily obfuscated, contains text related to 'Flight simulator x for windows 10', suggesting a lure. The ML classifier strongly flagged this PDF as malicious.

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.ru/pify?keyword=flight+simulator+x++for+windows+10
    • http://bosanave.thaitennisfriendship.net/uploads/1/3/1/4/131482812/fivasiwepenuli_busekake.pdf
    • http://files.worldadvancedsolutions.com/uploads/1/3/1/1/131164239/4271832.pdf
    • http://files.alexmorrisart.com/uploads/1/3/1/4/131453990/107362.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0435/4516/5976/files/atmosfera_zumthor.pdf
    • https://cdn.shopify.com/s/files/1/0433/9384/3358/files/easy_english_story_books_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0447/3847/8229/files/cover_letter_for_job_application_example.pdf
    • https://cdn.shopify.com/s/files/1/0431/5627/5362/files/finin.pdf
    • https://cdn.shopify.com/s/files/1/0429/9964/4314/files/beyonce_video_phone._mp3.pdf
    • https://cdn.shopify.com/s/files/1/0437/8004/6997/files/6752379492.pdf
    • https://cdn.shopify.com/s/files/1/0432/4897/6027/files/81596492641.pdf
    • https://cdn.shopify.com/s/files/1/0434/3041/2437/files/64301479179.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000071c7.bin
af42828c1c320b325af58f48b5f43df288d4ed50e47eb91371c5c643361bd047
pdf-font-stream PDF embedded font (sfnt) at offset 0x71C7 5628 bytes
font_01_sfnt_off000084e2.bin
59b6de24006f63633440e93a381522ebc8fe5d0c09ff19f42cefca5f5ee37af9
pdf-font-stream PDF embedded font (sfnt) at offset 0x84E2 11440 bytes