Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba33378931a9ceea…

MALICIOUS

PDF

41.3 KB Created: 2020-08-06 20:43:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7c158440da9089519d064616810838dc SHA-1: 87cba9d99ea49f990eaafea35b532aa5b433cb66 SHA-256: ba33378931a9ceeaaade1e3a0c1cc2eda05d2456921ecd49c6fef76c279008a9
120 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.ru, which is disguised as a worksheet. The document also contains a large number of links to PDFs hosted on Shopify, likely for SEO manipulation to improve search engine ranking for malicious content. No scripts were extracted, but the presence of the malicious redirector and the SEO link farm strongly suggest a phishing or malware distribution attempt.

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/wb?keyword=irregular%20verbs%20worksheet%20second%20grade
    • http://files.ipoggioli.com/uploads/1/3/0/8/130814056/ef49487b098d224.pdf
    • http://files.williamsportnazarene.org/uploads/1/3/2/3/132302939/supabopa-tolulego-lositiwobavir.pdf
    • http://files.wowpartyinvites.com/uploads/1/3/2/6/132682134/355d19424.pdf
    • http://files.chocolatesyn.com/uploads/1/3/1/3/131379382/kodarajaxip-rilejafolaro-fabinen-lexeko.pdf
    • https://cdn.shopify.com/s/files/1/0433/7205/2634/files/67898853434.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/31240515614.pdf
    • https://cdn.shopify.com/s/files/1/0431/8547/1656/files/gifawivadawumefav.pdf
    • https://cdn.shopify.com/s/files/1/0430/8952/6951/files/eros_guide_chicago_xxx_stars.pdf
    • https://cdn.shopify.com/s/files/1/0432/2256/5032/files/75239035230.pdf
    • https://cdn.shopify.com/s/files/1/0431/7036/5589/files/5706863964.pdf
    • https://cdn.shopify.com/s/files/1/0432/6939/0500/files/gomixaguzazidor.pdf
    • https://cdn.shopify.com/s/files/1/0432/1669/9553/files/9728545520.pdf
    • https://cdn.shopify.com/s/files/1/0431/3504/1693/files/85620944642.pdf
    • https://cdn.shopify.com/s/files/1/0431/0158/5570/files/84732733270.pdf
    • https://cdn.shopify.com/s/files/1/0438/1320/8226/files/gewabutupasus.pdf
    • https://cdn.shopify.com/s/files/1/0432/6385/2708/files/mosobosuzejerorod.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_off000055de.bin
de1d9482f142a35dbdf0dee7eceea4ccfec9852af994b6431c9efb15723705a4
pdf-font-stream PDF embedded font (sfnt) at offset 0x55DE 5328 bytes
font_01_sfnt_off000067fd.bin
45215c6a621c6cf5874b46f8dd99b029769a8319015da9d221d93a2732b6a61c
pdf-font-stream PDF embedded font (sfnt) at offset 0x67FD 10004 bytes
font_02_sfnt_off00008a25.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e
pdf-font-stream PDF embedded font (sfnt) at offset 0x8A25 4324 bytes