Malicious PDF — malware analysis report

Static analysis result for SHA-256 bcbccc9f28970798…

MALICIOUS

PDF

43.4 KB Created: 2020-08-24 05:33:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1f6cfea1d5c7d20635b8aa658d7d7783 SHA-1: 0f243db36733456fb34e4d96d1ab4bee91628de6 SHA-256: bcbccc9f28970798b9eabbf67776f1d5debd43c0bfaee809e3a4f442b4c48808
128 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one identified as a malicious redirector. The document body, though partially corrupted, suggests a lure related to obtaining a free credit report, aligning with the SE_INVOICE_LURE heuristic. The primary malicious link is https://ttraff.ru/pify?keyword=website+to+get+annual+free+credit+report, which is likely used to redirect the user to a malicious site. The PDF also functions as a link farm, with many links pointing to Shopify domains, likely for SEO manipulation or to host further malicious content.

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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=website+to+get+annual+free+credit+report
    • http://files.bettyscountrykitchen.com/uploads/1/3/1/4/131482976/wamiketez-daporapigugid-rakef.pdf
    • http://files.charlescityelectronics.com/uploads/1/3/1/1/131163960/rogafipovuxum.pdf
    • http://files.kmcauthor.com/uploads/1/3/0/8/130874329/lobagaluju.pdf
    • https://cdn.shopify.com/s/files/1/0435/4369/1413/files/jadifewusesamujuwelusibir.pdf
    • https://cdn.shopify.com/s/files/1/0447/4172/2261/files/conduction_system_of_the_heart.pdf
    • https://cdn.shopify.com/s/files/1/0429/7146/3831/files/bibojumekagaganaxeme.pdf
    • https://cdn.shopify.com/s/files/1/0434/7199/5030/files/xunepetuxawivomaxoz.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/botezosural.pdf
    • https://cdn.shopify.com/s/files/1/0429/8863/4263/files/32741766189.pdf
    • https://cdn.shopify.com/s/files/1/0437/1900/0229/files/tozezemejemupuworesekid.pdf
    • https://cdn.shopify.com/s/files/1/0431/0161/8330/files/18940209964.pdf
    • https://cdn.shopify.com/s/files/1/0437/5930/4865/files/dbz_android_19_death.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_off00006ace.bin
6848a654073ef0dc257ffecd8f6ae4ae0ee21d44c50eb19fb1ae91d66b1eb427		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6ACE 5476 bytes
font_01_sfnt_off00007d80.bin
b85a8bc44a8a5d10bcc27ef4d7e897b8192e12f6a59d5024bbfc8b0079ba5fba		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D80 10468 bytes

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