Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9fefb7a230c4066…

MALICIOUS

PDF

41.5 KB Created: 2020-08-15 02:39:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8b203f26f25ddc845e56c027691266fa SHA-1: fea75abb5fd21b6bd1cbe1b5288189dd33eeb71b SHA-256: a9fefb7a230c4066405d1345d16d5c44b7d83e8090223828ea813db97af90cc0
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links, many of which point to Shopify domains, but one critical link redirects to a known malicious domain (ttraff.com). This indicates a link farm or SEO poisoning technique designed to lure users to malicious content. The document body, though heavily obfuscated, contains the malicious URL, suggesting the primary intent is to drive traffic to this redirector. No scripts were extracted, and the PDF structure itself is the primary vector.

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.com/pify?keyword=abstraction+in+java+with+example+programs+pdf
    • http://dagolebi.dmedicinewoman.com/uploads/1/3/1/3/131398591/9587046.pdf
    • http://files.stephaniebershyoga.com/uploads/1/3/1/3/131379371/1049198.pdf
    • http://files.worldtravelingfeet.com/uploads/1/3/1/1/131164488/9b411518b8c9.pdf
    • https://cdn.shopify.com/s/files/1/0434/5053/1990/files/afcon_2020_qualifiers_fixtures_and_results.pdf
    • https://cdn.shopify.com/s/files/1/0427/9622/0572/files/achillea_millefolium_medicinal_uses.pdf
    • https://cdn.shopify.com/s/files/1/0431/6764/5857/files/difulolabisijexazalogere.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/texirid.pdf
    • https://cdn.shopify.com/s/files/1/0431/5817/5901/files/girifusisob.pdf
    • https://cdn.shopify.com/s/files/1/0431/9245/1232/files/widedetafike.pdf
    • https://cdn.shopify.com/s/files/1/0430/4021/1097/files/daxobelagitasosivapub.pdf
    • https://cdn.shopify.com/s/files/1/0431/0682/8441/files/30714749017.pdf
    • https://cdn.shopify.com/s/files/1/0432/5136/8104/files/35942730734.pdf
    • https://cdn.shopify.com/s/files/1/0434/4378/1792/files/72267185035.pdf
    • https://cdn.shopify.com/s/files/1/0437/8116/1121/files/list_of_prepositional_phrases_and_their_meaning.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_off000060ba.bin
adfdc1a24dc2b00c6a92be519c7d059a49673687ef5094dc2ac7d6fe8e8c70ed		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60BA 5996 bytes
font_01_sfnt_off00007504.bin
1e9116ddd028946f9219dedb40e9a552d2db55f34277f9cc14155dc22a4dcb4e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7504 10540 bytes

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