Malicious PDF — malware analysis report

Static analysis result for SHA-256 186a5b4c46f6dd49…

MALICIOUS

PDF

44.4 KB Created: 2020-08-19 17:12:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7c8d828ac965073be9f066e814833910 SHA-1: cebf3d7e67c1c623600b43eb6c21dd6eeec83051 SHA-256: 186a5b4c46f6dd494d0e92dd687b4eae0d3ea1b2aba77bf3984344eb8cca91b7
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a redirector service known to host malicious content. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=asia+political+map+outline+pdf', which is flagged as a malicious redirector. This suggests the document is designed to lead users to malicious sites, likely as part of a phishing or scam campaign.

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=asia+political+map+outline+pdf
    • http://wenan.donweimerheatingandair.com/uploads/1/3/2/8/132814718/jafenotowas.pdf
    • http://dagumis.happygreenjeans.com/uploads/1/3/0/8/130873851/36b336e592.pdf
    • http://tadedune.jillshooktherapy.com/uploads/1/3/0/7/130775840/29c116da.pdf
    • http://wibavatew.growninourhearts.com/uploads/1/3/1/4/131406893/989704.pdf
    • http://zosozamox.marciasantore.com/uploads/1/3/0/8/130813765/tuwuzulonegimubidop.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0435/7256/0033/files/ielts_blank_answer_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0431/4162/8072/files/4090002743.pdf
    • https://cdn.shopify.com/s/files/1/0428/9639/2348/files/oregon_driving_manual.pdf
    • https://cdn.shopify.com/s/files/1/0439/1701/7243/files/81643229494.pdf
    • https://cdn.shopify.com/s/files/1/0439/8442/1022/files/speaker_knockerz_game.pdf
    • https://cdn.shopify.com/s/files/1/0430/4633/8709/files/enki_y_enlil.pdf
    • https://cdn.shopify.com/s/files/1/0432/0280/5921/files/lanisadewunaduxuxuwabupur.pdf
    • https://cdn.shopify.com/s/files/1/0427/9202/6271/files/45796125247.pdf
    • https://cdn.shopify.com/s/files/1/0428/1666/7815/files/17907536583.pdf
    • https://cdn.shopify.com/s/files/1/0438/0993/1426/files/77832537783.pdf
    • https://cdn.shopify.com/s/files/1/0433/7516/5594/files/sopilakosedozokujaxufise.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006416.bin
f10786597defda12707ee5c2b61023f1a12ea5bc72b127f3a9bd42780cc8ba34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6416 3196 bytes
font_01_sfnt_off00006f8e.bin
c88b4df9ef33293c232faae13c5863d2e0e8fb711fab8718a1df723082b0443e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F8E 5196 bytes
font_02_sfnt_off00008126.bin
9eba0ac4844e0fe1da44c0f54adb0f3c692a704db54acba286ee15b581ede18d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8126 10388 bytes

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