Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3cd934892efe61e…

MALICIOUS

PDF

46.9 KB Created: 2020-08-10 21:21:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6017077ae47d26dda9a65ec8d4389fe0 SHA-1: 5076d5b5ba7a93f1eaae7cb85414dbb80bf1123e SHA-256: c3cd934892efe61e0b2aafbc8ca16cc4d294263575e1e14b6cbaf6ef7b61185c
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 a redirector service (ttraff.ru) known to host malicious content. The document body, though heavily obfuscated, also contains URLs that appear to be part of a link farm designed to manipulate search engine results. This suggests a social engineering attack aiming to drive traffic to malicious sites.

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=clinically+important+drug+interactions+pdf
    • http://files.philly-anywhere.com/uploads/1/3/1/4/131454216/vevipiruzakev_xalovuwa_fesig_dixesonabom.pdf
    • http://files.loudounlyricopera.com/uploads/1/3/2/6/132695472/91844e.pdf
    • http://junodug.sspres.org/uploads/1/3/1/4/131409909/wurukot-levuwoja-jepupigagopes.pdf
    • http://files.dba-group.co.uk/uploads/1/3/0/7/130776674/japame_bizuwofeguz.pdf
    • http://bedubila.themindfulsquad.com/uploads/1/3/0/8/130813509/depekajafe.pdf
    • https://cdn.shopify.com/s/files/1/0431/7754/1792/files/49452541433.pdf
    • https://cdn.shopify.com/s/files/1/0432/8436/5468/files/pevanewafajukogenij.pdf
    • https://cdn.shopify.com/s/files/1/0437/2476/7400/files/how_to_get_adobe_illustrator_for_free.pdf
    • https://cdn.shopify.com/s/files/1/0451/0593/8584/files/bgp_protocol_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0429/5753/7439/files/naxibebetus.pdf
    • https://cdn.shopify.com/s/files/1/0429/5688/2086/files/18671825700.pdf
    • https://cdn.shopify.com/s/files/1/0427/6341/9815/files/lugusit.pdf
    • https://cdn.shopify.com/s/files/1/0429/6219/0499/files/zepagunixakinu.pdf
    • https://cdn.shopify.com/s/files/1/0431/5699/6247/files/16444305659.pdf
    • https://cdn.shopify.com/s/files/1/0428/2155/0247/files/zorufikokodukalunilaf.pdf
    • https://cdn.shopify.com/s/files/1/0440/4995/7029/files/peliwazapavalujop.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_off000077db.bin
d0cf61ab85208300ee28efc81e6cac891489cf866dbfa7de2ff4133dd1298baf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77DB 5484 bytes
font_01_sfnt_off00008a67.bin
0f6823bddabeced895acd86bd606fe4394508adc54bd4064f7317645646f8f69		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8A67 10572 bytes

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