Malicious PDF — malware analysis report

Static analysis result for SHA-256 c982ead9b971eabf…

MALICIOUS

PDF

55.2 KB Created: 2020-08-06 17:35:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 857273d15382f3b237600a6510cd3d0a SHA-1: aaa6ef5f5cfcb51fbe942b1931921392d5b4b6ba SHA-256: c982ead9b971eabf8a5cff1366245b31984a1c34fa54921a00e40325632fddd6
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.com/pify?keyword=completed+performance+appraisal+sample+pdf'. The document body, though heavily obfuscated, contains text related to performance appraisals and the URL itself, suggesting a lure. The file also exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on cdn.shopify.com, though the primary malicious link is to ttraff.com.

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=completed+performance+appraisal+sample+pdf
    • http://files.sagebrushaviation.org/uploads/1/3/1/1/131164009/keretavatakepe.pdf
    • http://files.wooff.ca/uploads/1/3/0/8/130874627/daxotovonugusa_joraba_wosixavimus.pdf
    • http://files.chenowethbairddesign.com/uploads/1/3/1/8/131871894/kawal_fudomur.pdf
    • http://files.kappagammachi.com/uploads/1/3/1/3/131380177/e070b1b37f6d672.pdf
    • http://files.rainbowfarmsmaine.com/uploads/1/3/0/8/130874115/49c4912e.pdf
    • https://cdn.shopify.com/s/files/1/0429/9263/1962/files/79206465176.pdf
    • https://cdn.shopify.com/s/files/1/0427/7967/2735/files/61703377603.pdf
    • https://cdn.shopify.com/s/files/1/0431/3359/9893/files/iterative_depth_first_search.pdf
    • https://cdn.shopify.com/s/files/1/0432/1817/4107/files/46076643543.pdf
    • https://cdn.shopify.com/s/files/1/0435/5126/0823/files/godenodegeku.pdf
    • https://cdn.shopify.com/s/files/1/0430/9899/6889/files/nututak.pdf
    • https://cdn.shopify.com/s/files/1/0437/0386/1401/files/nuridaxise.pdf
    • https://cdn.shopify.com/s/files/1/0429/5586/6263/files/tibopiromuzaralitow.pdf
    • https://cdn.shopify.com/s/files/1/0427/5778/3718/files/35525064129.pdf
    • https://cdn.shopify.com/s/files/1/0432/5667/6507/files/merofoxopukivamom.pdf
    • https://cdn.shopify.com/s/files/1/0430/0885/2117/files/87437881591.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/bararilisubolubudikolumo.pdf
    • https://cdn.shopify.com/s/files/1/0431/7731/2411/files/lumokemuvazogitogejurajaw.pdf
    • https://cdn.shopify.com/s/files/1/0432/2567/7982/files/kabary_betsimisaraka.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/
    • https://cdn.shopify.com/s/files/1/0437/0386/1401/files/nu

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009a46.bin
9ab4502f9eab18c350a83c8df1d572707ba7d589f56446ca0a4e77e92d35cbe0
pdf-font-stream PDF embedded font (sfnt) at offset 0x9A46 5208 bytes
font_01_sfnt_off0000abdb.bin
10b69031e1853b09cc770487dc7531eaaae3768d9d15ed1fb7117ece3cec9906
pdf-font-stream PDF embedded font (sfnt) at offset 0xABDB 10272 bytes