Malicious PDF — malware analysis report

Static analysis result for SHA-256 51a926e073eb7572…

MALICIOUS

PDF

42.2 KB Created: 2020-08-13 06:11:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6bd7773232d5db27a0ac7c4d4557288d SHA-1: a5168919f82ed7a78ff0eef6b94087d959f4e790 SHA-256: 51a926e073eb7572c30032ca79de44e39125e42b495e36de09fe32e045d6e179
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, with one specifically identified as a malicious redirector. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass of external PDF links, suggesting an attempt to manipulate search results or distribute malicious content. The presence of the malicious redirector URL points towards 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.cc/pify?keyword=bhagavan+das+pdf
    • http://vegeni.villasincabo.net/uploads/1/3/2/8/132814930/8041395.pdf
    • http://files.baltimorefrassati.org/uploads/1/3/0/7/130739544/9916328.pdf
    • http://files.jarodmcguffey.com/uploads/1/3/2/6/132682471/wovevaj.pdf
    • http://rugivovot.centralcalclay.com/uploads/1/3/1/1/131164250/143825ebe2f9a2e.pdf
    • https://cdn.shopify.com/s/files/1/0432/4642/0136/files/wumepipukutunumen.pdf
    • https://cdn.shopify.com/s/files/1/0431/8684/7903/files/95232805474.pdf
    • https://cdn.shopify.com/s/files/1/0433/7877/0076/files/vitubitovitagikefitexisup.pdf
    • https://cdn.shopify.com/s/files/1/0434/3506/5505/files/13294330963.pdf
    • https://cdn.shopify.com/s/files/1/0427/9464/7719/files/dujunidaxonuvo.pdf
    • https://cdn.shopify.com/s/files/1/0431/5627/5362/files/55947671069.pdf
    • https://cdn.shopify.com/s/files/1/0429/3551/7337/files/abinitio_interview_questions_and_answers_for_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0429/0553/4620/files/cinex_hd_product_key.pdf
    • https://cdn.shopify.com/s/files/1/0438/1245/4560/files/26273824408.pdf
    • https://cdn.shopify.com/s/files/1/0452/2138/0247/files/free_apron_sewing_pattern.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_off00006579.bin
067b867c81d26a0a524d94264cbfe6112d461a020bc34312e8196905a08bc1d0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6579 5284 bytes
font_01_sfnt_off0000777d.bin
dba186d40d56132a761126307095573f97c0b6cebb5848430c5b4d750696f90d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x777D 10844 bytes

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