Malicious PDF — malware analysis report

Static analysis result for SHA-256 47495baabf109fba…

MALICIOUS

PDF

36.8 KB Created: 2020-08-03 22:02:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 85bc99a069cbdf289ea321bfd2269d45 SHA-1: 77a65525ebb3cd3ca6550388c5dd7af465c1b29b SHA-256: 47495baabf109fba63839de014f0530a1a04e69a779e798403a753406b962c19
120 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a known malicious domain, ttraff.com, disguised as a job circular. This indicates a phishing attempt to lure users to malicious infrastructure. The document body and embedded URLs further support this, with numerous links pointing to various PDF files, likely part of a link farm to improve search engine ranking for 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.com/pify?keyword=bteb+job+circular+2020+pdf
    • http://files.theatreahs.com/uploads/1/3/1/4/131409677/fubesimusov.pdf
    • http://gajexokam.goingtruegreen.com/uploads/1/3/1/8/131857419/lilokeka.pdf
    • http://files.rikrecruitment.com/uploads/1/3/0/9/130969301/sekoto_wirigaw_tiramifejojawas_zudufazoweb.pdf
    • http://files.covenantbaptistslidell.com/uploads/1/3/2/7/132741430/718543.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/30072581460.pdf
    • https://cdn.shopify.com/s/files/1/0431/9156/6493/files/14098416243.pdf
    • https://cdn.shopify.com/s/files/1/0432/6732/6110/files/nurasadako.pdf
    • https://cdn.shopify.com/s/files/1/0431/0463/2992/files/physical_chemistry_mcquarrie_solutions.pdf
    • https://cdn.shopify.com/s/files/1/0434/0783/5293/files/92292750607.pdf
    • https://cdn.shopify.com/s/files/1/0435/5850/2563/files/dugozegodovunemos.pdf
    • https://cdn.shopify.com/s/files/1/0438/2385/7824/files/60646109963.pdf
    • https://cdn.shopify.com/s/files/1/0435/3343/5029/files/47825042300.pdf
    • https://cdn.shopify.com/s/files/1/0429/3338/7423/files/zapuxagez.pdf
    • https://cdn.shopify.com/s/files/1/0429/5681/6540/files/86754976581.pdf
    • https://cdn.shopify.com/s/files/1/0434/0455/8488/files/liwidivotijazawage.pdf
    • https://cdn.shopify.com/s/files/1/0430/3768/7962/files/vesafuvepoko.pdf
    • https://cdn.shopify.com/s/files/1/0435/9480/9512/files/country_code_3.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_off00005165.bin
ee05c9df5ed44450fa7614952b0192cf881d4af03d7b8b552c5bc575772ae68f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5165 5508 bytes
font_01_sfnt_off00006431.bin
8cb19efca02dd6a3ebe6db5e4194f1a98b40901db9b188cd7b414f3cd043ba6d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6431 9900 bytes

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