Malicious PDF — malware analysis report

Static analysis result for SHA-256 71ed363fa3d29f2a…

MALICIOUS

PDF

49.6 KB Created: 2020-09-08 21:58:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6f29e4e276116fe7fa6bda512cc8e232 SHA-1: 2f535c7e5da90646acc24e59a55b20047c5ad394 SHA-256: 71ed363fa3d29f2a193b648d1656e8d0701a8b3dbbb50fc1caf51f0f386f8058
154 Risk Score

Malware Insights

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

This PDF document contains a link farm, with 26 external PDF links, including one to a known malicious redirector. The primary malicious link is https://ttraff.club/wix?keyword=autocad+pdf+underlay+white+background, which is presented as a search result. The document's structure and embedded links suggest it is part of a SEO poisoning or link farm attack designed to drive traffic to malicious sites.

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.club/wix?keyword=autocad+pdf+underlay+white+background
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/1317992411.pdf
    • https://cdn.shopify.com/s/files/1/0433/6300/8661/files/apollo_13_full_movie_in_480p.pdf
    • https://cdn.shopify.com/s/files/1/0439/4886/7742/files/birthday_new_punjabi_song_video.pdf
    • https://cdn.shopify.com/s/files/1/0437/2732/3301/files/kusav.pdf
    • https://cdn.shopify.com/s/files/1/0433/1126/7990/files/68163755378.pdf
    • https://cdn.shopify.com/s/files/1/0438/4745/0789/files/noredokixe.pdf
    • https://cdn.shopify.com/s/files/1/0432/2718/5311/files/counting_to_10_in_italian_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0440/8282/3320/files/bblia_hebraica_stuttgartensia_traduzida.pdf
    • https://cdn.shopify.com/s/files/1/0434/0200/2595/files/5172859253.pdf
    • https://cdn.shopify.com/s/files/1/0434/1936/9639/files/benefits_of_social_media_on_youth.pdf
    • https://cdn.shopify.com/s/files/1/0429/2732/5343/files/18144583617.pdf
    • https://cdn.shopify.com/s/files/1/0433/4610/0377/files/mudez.pdf
    • https://cdn.shopify.com/s/files/1/0459/6760/5927/files/crime_case_report_format.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000543b.bin
a4bcdad8d14f3eaa8d7ca173f5b5fabdfdb1e6a2648d3df958bbf1d27ce71599		 pdf-font-stream PDF embedded font (sfnt) at offset 0x543B 4032 bytes
font_01_sfnt_off000062b7.bin
96dbd81749a3470084d30c656b550935abefa3d523cedf8764d9e86be3620568		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62B7 5624 bytes
font_02_sfnt_off000075f7.bin
945ddd358bdebcd19d9e0cff76b0f0667ef151bb78c4f49ec352095af042ee25		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75F7 14168 bytes
font_03_sfnt_off0000a1af.bin
b2ddecaff7e2361bf51021b35f9c014659943b600c4f466cb4656cea9e83b80e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA1AF 16088 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.