Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a751a052cf0322c…

MALICIOUS

PDF

39.5 KB Created: 2020-08-13 21:29:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ff899bf26c065ab61b2fad9da7bd0cf4 SHA-1: 49bc18ad9a00b65541eaf40dc0f28ad7d9a9766e SHA-256: 4a751a052cf0322cf146b8c9a2dae3111f03e1c8d7f402f5f6934411c1e87d03
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it directs users to a known malicious URL. The document body, though heavily obfuscated, contains the target URL and a search query related to SSRS reports, suggesting a lure. The PDF_SEO_LINK_FARM heuristic indicates a large number of outbound links, many hosted on Shopify, likely to obscure the malicious redirector. The primary malicious IOC is the redirector URL.

Heuristics 3

  • 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.
  • 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=how+to+add+graphs+in+ssrs+reports
    • http://nadubili.memoryreloaded.com/uploads/1/3/1/4/131482976/jukudisukasa_wululosa_dugozasurekizaj_pikebulafube.pdf
    • http://darivofu.fillmorepaws.com/uploads/1/3/1/3/131380429/3d335b0e267.pdf
    • http://files.joel-nichols.com/uploads/1/3/1/3/131379844/8746961.pdf
    • https://cdn.shopify.com/s/files/1/0434/1599/4529/files/bezepavamipaborozew.pdf
    • https://cdn.shopify.com/s/files/1/0439/3956/1630/files/levijigeror.pdf
    • https://cdn.shopify.com/s/files/1/0437/7418/1534/files/barlowe_s_guide_to_extraterrestrials.pdf
    • https://cdn.shopify.com/s/files/1/0432/4327/4402/files/10528266049.pdf
    • https://cdn.shopify.com/s/files/1/0450/5387/0232/files/engine_bearing_catalog.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xoxolesusoziviro.pdf
    • https://cdn.shopify.com/s/files/1/0433/7437/9157/files/metabolic_syndrome_uk.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/negopolikutowuz.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pamuzinesikajojefex.pdf
    • https://cdn.shopify.com/s/files/1/0433/7618/1400/files/sedapomuzidewavibudanara.pdf
    • https://cdn.shopify.com/s/files/1/0437/9348/1885/files/we_are_all_cannibals.pdf
    • https://cdn.shopify.com/s/files/1/0430/5901/9927/files/5x5_sliding_puzzle_solver.pdf
    • https://cdn.shopify.com/s/files/1/0431/9710/4288/files/1988594156.pdf
    • https://cdn.shopify.com/s/files/1/0427/7154/6279/files/14188873438.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_off00005c9d.bin
61f16011c44ace0a928ec350d286e11e59efcc2869336875e230948f5169f4c5
pdf-font-stream PDF embedded font (sfnt) at offset 0x5C9D 5244 bytes
font_01_sfnt_off00006e7d.bin
46826b1f79ddaf5188cfd10224bba890cd28fe5c5a5aa9b34b27c9cbd2e147d0
pdf-font-stream PDF embedded font (sfnt) at offset 0x6E7D 9640 bytes