Malicious PDF — malware analysis report

Static analysis result for SHA-256 4bb2588ac7fee837…

MALICIOUS

PDF

49.1 KB Created: 2020-08-12 04:59:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6fe1912c00fffbee61d41695f00ec63a SHA-1: 60d5ec485da694541367c6bcbcf2f316adfc1c2b SHA-256: 4bb2588ac7fee837d7c18c04f6297d2d0b6f32f5d055b95898594a818b387ee2
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one identified as a malicious redirector. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK indicates a critical finding, and the presence of numerous external links suggests a link farm for SEO manipulation or phishing. The document body contains obfuscated text and a reconstructed URL that points to a malicious redirector, likely intended to lead the user to a phishing or malware distribution site.

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.cc/pify?keyword=abdala+jose+marti+pdf
    • http://lakemevo.steveedwardssolo.com/uploads/1/3/1/4/131482976/6299869.pdf
    • http://files.oldmanmoney.com/uploads/1/3/0/8/130813732/jinovobawobukum-sefugumadulub.pdf
    • http://files.savesaintthomasschool.com/uploads/1/3/2/6/132695813/3101381.pdf
    • https://cdn.shopify.com/s/files/1/0428/8449/7575/files/op_amp_ic_741.pdf
    • https://cdn.shopify.com/s/files/1/0429/3348/5727/files/81009803868.pdf
    • https://cdn.shopify.com/s/files/1/0429/6422/2101/files/takituvezafolu.pdf
    • https://cdn.shopify.com/s/files/1/0432/8616/7702/files/malod.pdf
    • https://cdn.shopify.com/s/files/1/0427/6482/8838/files/36425555269.pdf
    • https://cdn.shopify.com/s/files/1/0431/0374/8260/files/84317543179.pdf
    • https://cdn.shopify.com/s/files/1/0429/9633/4753/files/vulax.pdf
    • https://cdn.shopify.com/s/files/1/0435/2727/4645/files/sqlalchemy_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0428/4071/9516/files/4939268778.pdf
    • https://cdn.shopify.com/s/files/1/0430/0609/9605/files/91788208735.pdf
    • https://cdn.shopify.com/s/files/1/0433/4069/3662/files/chief_keef_sosa.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_off000075e0.bin
68380b04baabe611e21b796f5422faafb1d790c0caa3d36ea13f606d85cda1fe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75E0 5072 bytes
font_01_sfnt_off0000871f.bin
2cf10644645b1b64243fecad9ea67f2995d82575295360b2f6d8b72d46e13547		 pdf-font-stream PDF embedded font (sfnt) at offset 0x871F 10024 bytes
font_02_sfnt_off0000a971.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA971 4324 bytes

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