Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9fa07486839ce35…

MALICIOUS

PDF

36.6 KB Created: 2020-08-21 03:05:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6e109906a74148d89f698f12a087c3f0 SHA-1: 9d52dfd47234b0997d50e2b9e79e5edda039fa2b SHA-256: f9fa07486839ce352623a139cf8f9a6296b846beaf0d6ac9198b332be4d46329
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to Shopify domains, but one critical link directs to a known malicious redirector at 'ttraff.ru'. This suggests a link farm or SEO poisoning attack designed to funnel users to malicious content. The document body, though heavily obfuscated, contains the same lure text and URLs, reinforcing the malicious intent. No scripts were extracted, but the primary attack vector appears to be the malicious redirection.

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/pify?keyword=hand+embroidered+bed+sheets+in+pakistan
    • http://files.liveplayband.com/uploads/1/3/1/8/131871650/bd6b6eda722.pdf
    • http://files.publicspeakerkevinthefishmonger.com/uploads/1/3/2/7/132710722/biwixos.pdf
    • https://cdn.shopify.com/s/files/1/0433/0127/3758/files/dofaga.pdf
    • https://cdn.shopify.com/s/files/1/0429/9328/7321/files/28708936530.pdf
    • https://cdn.shopify.com/s/files/1/0441/0625/2440/files/14403540850.pdf
    • https://cdn.shopify.com/s/files/1/0434/5469/3537/files/orquideas_peru.pdf
    • https://cdn.shopify.com/s/files/1/0431/6640/0666/files/56830816129.pdf
    • https://cdn.shopify.com/s/files/1/0435/2724/1879/files/tobexub.pdf
    • https://cdn.shopify.com/s/files/1/0436/8800/1689/files/limet.pdf
    • https://cdn.shopify.com/s/files/1/0434/2795/4853/files/89197965582.pdf
    • https://cdn.shopify.com/s/files/1/0432/8266/1526/files/bill_evans_autumn_leaves_piano.pdf
    • https://cdn.shopify.com/s/files/1/0431/7682/0890/files/bokolixemev.pdf
    • https://cdn.shopify.com/s/files/1/0429/2722/7036/files/jimofakax.pdf
    • https://cdn.shopify.com/s/files/1/0437/7978/4866/files/38502732122.pdf
    • https://cdn.shopify.com/s/files/1/0433/4305/2953/files/40861796441.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_off0000513a.bin
5b357fcf39cf4bad75ab9f683f0fbe5b4f7de04cf931a3060c90b3c4e3519e75		 pdf-font-stream PDF embedded font (sfnt) at offset 0x513A 5332 bytes
font_01_sfnt_off0000631d.bin
0b8e1f64b1bb3f03192aa713b35c6d655d574596cdcb1362b94b9f1ce54dec4e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x631D 9996 bytes

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