Malicious PDF — malware analysis report

Static analysis result for SHA-256 69e9cd2f7170f2f4…

MALICIOUS

PDF

40.7 KB Created: 2020-08-29 17:27:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 06350cda98d4842b7be4e3e743739ee9 SHA-1: 6e5020a033f22f1dc2412b6ec8d67c8940ab2e4e SHA-256: 69e9cd2f7170f2f4b66cca1051336b84706e4f2c982828905084705d7117bda7
154 Risk Score

Malware Insights

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

This PDF document contains a link to a known malicious redirector, indicating a phishing or scam attempt. The document body, though heavily obfuscated, contains the URL and appears to be a lure for users to click on it. The presence of numerous other PDF links suggests a link farm or SEO poisoning tactic to distribute 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/wix?keyword=installation+douche+encastrable+grohe
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0429/1241/5897/files/54403278240.pdf
    • https://cdn.shopify.com/s/files/1/0434/2779/1009/files/ccna_voice_course_outline.pdf
    • https://cdn.shopify.com/s/files/1/0432/5949/4555/files/25683013049.pdf
    • https://cdn.shopify.com/s/files/1/0435/9087/7339/files/53148553181.pdf
    • https://static.usrfiles.com/ugd/b8c837_0b7ea52f661440188443e6796643502e.pdf
    • https://static.usrfiles.com/ugd/b8c837_f23478dd962a49229d888a6a32ad5557.pdf
    • https://static.usrfiles.com/ugd/b8c837_d824dd26c0dd4b38ba26063f9bb9d10e.pdf
    • https://static.usrfiles.com/ugd/b8c837_e9f61959076245ed9fa00c96a6d56967.pdf
    • https://cdn.shopify.com/s/files/1/0435/0391/1076/files/11th_bipartite_settlement_officers.pdf
    • https://cdn.shopify.com/s/files/1/0430/1524/1891/files/60957753744.pdf
    • https://cdn.shopify.com/s/files/1/0462/7644/4320/files/94151358073.pdf
    • https://cdn.shopify.com/s/files/1/0430/9296/7581/files/vaaste_video_song_dhvani.pdf
    • https://static.usrfiles.com/ugd/b8c837_116f9e7c5bb14586972edbc3ed1e0a6a.pdf
    • https://static.usrfiles.com/ugd/b8c837_ab7a096ce89f4b098577212538215d70.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_off00006195.bin
767d6502a13d4483277a95bf25a2745323914eeb47dc6c767ce97805ebd4c9b7
pdf-font-stream PDF embedded font (sfnt) at offset 0x6195 5276 bytes
font_01_sfnt_off00007367.bin
a67626ac3fb7d3b1ec734ac13dbb7e8a83f43d812f5ff56666ca5f3886542867
pdf-font-stream PDF embedded font (sfnt) at offset 0x7367 10080 bytes