Malicious PDF — malware analysis report

Static analysis result for SHA-256 a63a669224613c0d…

MALICIOUS

PDF

42.5 KB Created: 2020-08-05 12:08:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a111db2563ab8e265ebb97c1eb719182 SHA-1: fbac27e41270a28a89e185dfa30efc4c0cc989cc SHA-256: a63a669224613c0d64c857a0714c059699c88725e42b0b5874631572c4f30495
150 Risk Score

Malware Insights

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

The PDF contains embedded links that point to a known malicious redirector, indicating a phishing or malware distribution attempt. The document body, though heavily obfuscated, contains text fragments and URLs that suggest a lure related to 'Api 527 latest edition pdf'. The presence of numerous external PDF links, many hosted on Shopify, further supports the link farm heuristic. No scripts were extracted, limiting the analysis of direct execution behavior.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=api+527+latest+edition+pdf
    • http://files.ccmplbca.com/uploads/1/3/2/6/132681145/b6ff53b236.pdf
    • http://files.livfoodmarket.com/uploads/1/3/1/4/131438217/02a1bc7dd.pdf
    • http://files.americanrosebridal.com/uploads/1/3/0/8/130873923/xowuve.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/62222626122.pdf
    • https://cdn.shopify.com/s/files/1/0431/3926/8774/files/erp_business_case_example.pdf
    • https://cdn.shopify.com/s/files/1/0432/6572/0486/files/3009628119.pdf
    • https://cdn.shopify.com/s/files/1/0434/6842/3334/files/back_to_school_activities_for_high_school_students.pdf
    • https://cdn.shopify.com/s/files/1/0433/5281/7832/files/somivizuvos.pdf
    • https://cdn.shopify.com/s/files/1/0431/3966/1981/files/82065046291.pdf
    • https://cdn.shopify.com/s/files/1/0434/5095/7991/files/jejifon.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/58585016777.pdf
    • https://cdn.shopify.com/s/files/1/0430/5308/8919/files/function_of_brushes_in_dc_motor.pdf
    • https://cdn.shopify.com/s/files/1/0428/5382/6726/files/banilinotabigibijumakinu.pdf
    • https://cdn.shopify.com/s/files/1/0433/7015/2088/files/engineer_cosmetic_loadouts.pdf
    • https://cdn.shopify.com/s/files/1/0432/4183/2615/files/61065948436.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005cd8.bin
f5ff6e59a8c7daacbec1e3ea37113b87b9b02f56ae835b773e1e6bc6304b561a
pdf-font-stream PDF embedded font (sfnt) at offset 0x5CD8 5264 bytes
font_01_sfnt_off00006ee3.bin
f7dd5dfea628137d9dba1406f2a6db6642eb06cd8731c426cf102518acd51541
pdf-font-stream PDF embedded font (sfnt) at offset 0x6EE3 10832 bytes
font_02_sfnt_off000093d2.bin
5da22109c1fba17011c849e065b2f3278334ccd609d6a9cfc06e7966f70e6d9e
pdf-font-stream PDF embedded font (sfnt) at offset 0x93D2 2228 bytes