Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1238f2816925009…

MALICIOUS

PDF

42.7 KB Created: 2020-08-19 10:14:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 52505fbb868fbfbf94e9af6433a76df0 SHA-1: fc336a3d7ce8b2b8110c57402eee747ebdd97541 SHA-256: d1238f28169250095d64c5056385628fb0dcfe68f0f2e5f5be8babd6e30449ce
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a significant number of embedded links, with heuristics indicating it is a link farm. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which in turn leads to a Shopify-hosted PDF. The document body, though heavily obfuscated, also contains these URLs. The primary attack pattern appears to be the distribution of a large number of links, likely for SEO manipulation or to host further malicious content.

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=lichtenberg+wood+burning+microwave+transformer
    • http://files.makejaxweird.com/uploads/1/3/0/8/130874296/zevipuvuveg.pdf
    • http://ridilane.theresathorne.com/uploads/1/3/1/6/131606289/ff2437f5.pdf
    • http://magazur.rosamarinaboutique.com/uploads/1/3/2/3/132303382/pegisalulilu-xogekopigojaku-devuvejumubusi.pdf
    • http://files.digginthenew.com/uploads/1/3/1/6/131607321/5752519.pdf
    • http://bimil.fresnotreeservicecompany.com/uploads/1/3/1/4/131483371/1978acb5.pdf
    • https://cdn.shopify.com/s/files/1/0432/3203/4976/files/likinovutotewarivovos.pdf
    • https://cdn.shopify.com/s/files/1/0432/3832/6432/files/european_resuscitation_council_2018_guidelines.pdf
    • https://cdn.shopify.com/s/files/1/0431/6702/3259/files/97101670718.pdf
    • https://cdn.shopify.com/s/files/1/0429/5458/8316/files/assassin_s_creed_odyssey_guide_download.pdf
    • https://cdn.shopify.com/s/files/1/0429/9282/8579/files/zara_bedding_size_guide.pdf
    • https://cdn.shopify.com/s/files/1/0434/6799/7344/files/91161514433.pdf
    • https://cdn.shopify.com/s/files/1/0437/6225/3978/files/composition_of_functions_worksheet_key.pdf
    • https://cdn.shopify.com/s/files/1/0433/8050/6773/files/92322156164.pdf
    • https://cdn.shopify.com/s/files/1/0440/5932/8662/files/4518820439.pdf
    • https://cdn.shopify.com/s/files/1/0434/7029/1096/files/volkswagen_jetta_service_manual.pdf
    • https://cdn.shopify.com/s/files/1/0439/8609/2190/files/rt_n66u_tomatousb.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_off0000696c.bin
6dd4351b7f9afe54fdc4632aa24fdccec53f2ba89ad1c2bb256f012dd84b9eb5
pdf-font-stream PDF embedded font (sfnt) at offset 0x696C 5636 bytes
font_01_sfnt_off00007c71.bin
54d44dfebbe64deac778ad043929165f5c5e647525c9dbfad1577e42f7766afc
pdf-font-stream PDF embedded font (sfnt) at offset 0x7C71 9664 bytes