Malicious PDF — malware analysis report

Static analysis result for SHA-256 e30e7de7ea541704…

MALICIOUS

PDF

44.6 KB Created: 2020-08-18 19:32:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1ff939e614aa1279765f889cd915d778 SHA-1: abdeed55c29d3e3e960de0d3cf2d6528f334699d SHA-256: e30e7de7ea5417049c5ee39c20c2a94275bc888eb214c960464069c4ec2e2729
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a link to a known malicious redirector, ttraff.cc, which is used to distribute malware. The document body and embedded links suggest a lure for cracked software. The PDF also contains a large number of links to other PDFs, many hosted on Shopify, which is indicative of a link farm designed to improve search engine rankings for malicious content.

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/pify?keyword=avast+premier+full+crack+2019
    • http://files.tracyeducatorsassociation.org/uploads/1/3/1/4/131438541/musejefol-vopogetapozu-zedepufa.pdf
    • http://rewazox.leahblits.com/uploads/1/3/0/8/130815017/guwuxozolosik-joxar-sofuvelubewezu-donugovul.pdf
    • https://cdn.shopify.com/s/files/1/0437/4190/5045/files/vugimenakijusa.pdf
    • https://cdn.shopify.com/s/files/1/0444/5909/8279/files/zoselojafosovugikozi.pdf
    • https://cdn.shopify.com/s/files/1/0438/1245/4560/files/54367429706.pdf
    • https://cdn.shopify.com/s/files/1/0436/1119/3501/files/4._1_bondad_de_ajuste.pdf
    • https://cdn.shopify.com/s/files/1/0438/9273/6155/files/bobble_keyboard_app_for_android.pdf
    • https://cdn.shopify.com/s/files/1/0439/1796/7528/files/18518828288.pdf
    • https://cdn.shopify.com/s/files/1/0428/6896/5532/files/jibenizolerul.pdf
    • https://cdn.shopify.com/s/files/1/0439/5070/2750/files/toxukisobimadu.pdf
    • https://cdn.shopify.com/s/files/1/0431/1416/8480/files/giduriji.pdf
    • https://cdn.shopify.com/s/files/1/0434/9073/8328/files/pogoseronivagowotixejegex.pdf
    • https://cdn.shopify.com/s/files/1/0434/4394/5628/files/pokemon_crystal_walk_through_walls.pdf
    • https://cdn.shopify.com/s/files/1/0432/1663/4016/files/50483650106.pdf
    • https://cdn.shopify.com/s/files/1/0448/4136/9761/files/jamuzuvegivafuzemaf.pdf
    • https://cdn.shopify.com/s/files/1/0429/6101/0842/files/pafax.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006a5a.bin
0248c3c4436e9f663d9a589f5d8205d354b1220e729cbe03b265e0488da691d0
pdf-font-stream PDF embedded font (sfnt) at offset 0x6A5A 5756 bytes
font_01_sfnt_off00007de1.bin
c2147ce2cfddf8de99e5bf4f0bdf9848e0a1b637903315869100e2b48500c797
pdf-font-stream PDF embedded font (sfnt) at offset 0x7DE1 13740 bytes