Malicious PDF — malware analysis report

Static analysis result for SHA-256 a538e8b5301aa6a9…

MALICIOUS

PDF

40.4 KB Created: 2020-08-14 08:30:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7561a0440ecc934b876f75c65cbb6479 SHA-1: 0d042afacbd24294af46326a53c01554338aeb14 SHA-256: a538e8b5301aa6a9520236d456a06467eae30e2797e1f0f0c4cd636763410f7a
120 Risk Score

Malware Insights

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

The PDF document contains a malicious redirector link disguised as an offer for a free music app. The document body and embedded URLs suggest a lure to a malicious site. The primary malicious IOC is the redirector URL, which likely leads to further malicious content or phishing pages.

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=free+music++pro+app+ios
    • http://fifobodub.doulasofomaha.com/uploads/1/3/1/4/131437812/9735949.pdf
    • http://files.thecharmerwpb.com/uploads/1/3/2/3/132302940/mozovafikimus_vabanibemoweso.pdf
    • http://files.sunsetairporttransportation.com/uploads/1/3/1/4/131437312/9096797.pdf
    • https://cdn.shopify.com/s/files/1/0431/3900/6632/files/convert_xlsx_to_xls.pdf
    • https://cdn.shopify.com/s/files/1/0435/5129/3603/files/juzodabepanagelug.pdf
    • https://cdn.shopify.com/s/files/1/0430/6560/6301/files/android_scan_to.pdf
    • https://cdn.shopify.com/s/files/1/0429/6772/8279/files/46510439001.pdf
    • https://cdn.shopify.com/s/files/1/0439/7219/8558/files/57903656735.pdf
    • https://cdn.shopify.com/s/files/1/0432/7122/5502/files/80009085415.pdf
    • https://cdn.shopify.com/s/files/1/0433/5586/5243/files/buwutabimafejuxufuruwir.pdf
    • https://cdn.shopify.com/s/files/1/0436/2685/6601/files/calamities_renee_gladman.pdf
    • https://cdn.shopify.com/s/files/1/0431/5283/4717/files/92014990089.pdf
    • https://cdn.shopify.com/s/files/1/0434/8284/1250/files/metabolismo_de_los_lipidos.pdf
    • https://cdn.shopify.com/s/files/1/0439/4795/0248/files/34119089124.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_off0000610c.bin
4f9fb87d8e271ac11696d158e59c60df81ff15dc60dddf16356da062c86d6ba7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x610C 5004 bytes
font_01_sfnt_off000071f2.bin
229caf6cd29647d7f9a308a0e7c132f5876319faaa220da196fc6476628cd8e6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71F2 10304 bytes

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