Malicious PDF — malware analysis report

Static analysis result for SHA-256 4968dc67f28a6874…

MALICIOUS

PDF

39.9 KB Created: 2020-08-10 08:18:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 71976e7c4ecc0268e6010888994acf5b SHA-1: 0df89f2c7f9bb7079ed231799b984fcd8a69b236 SHA-256: 4968dc67f28a687440667f21ebf7f7d01fe8d7d8eb32ecb900c0bfbdf918f99d
128 Risk Score

Malware Insights

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

The PDF file contains a deceptive call-to-action disguised as a free download for AutoCAD tutorials. It embeds a link that redirects to malicious infrastructure, specifically `https://ttraff.com/pify?keyword=autocad+tutorial+bangla+pdf+free+download`. This redirection is a common tactic for phishing or malware delivery. The presence of numerous external PDF links, many hosted on Shopify, suggests a link farm designed for SEO manipulation to attract unsuspecting users.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=autocad+tutorial+bangla+pdf+free+download
    • http://files.stmarksdancestudio.org/uploads/1/3/0/8/130813992/f72076530.pdf
    • http://files.pooltablesandsupplies.com/uploads/1/3/0/8/130813988/bojosukoxe_jodabavufafufe_xomuworexo_zikelal.pdf
    • http://files.johnspauldingphotography.com/uploads/1/3/0/7/130739628/zugoponopobi.pdf
    • http://files.theforgottengospel.net/uploads/1/3/1/4/131452939/7106860.pdf
    • https://cdn.shopify.com/s/files/1/0431/1184/1949/files/13324984553.pdf
    • https://cdn.shopify.com/s/files/1/0431/6528/6566/files/27467510504.pdf
    • https://cdn.shopify.com/s/files/1/0432/2764/4072/files/lugofakekimevemafavebube.pdf
    • https://cdn.shopify.com/s/files/1/0429/9236/9823/files/kipatevomux.pdf
    • https://cdn.shopify.com/s/files/1/0434/6806/2872/files/72640683568.pdf
    • https://cdn.shopify.com/s/files/1/0435/2645/5455/files/12735028309.pdf
    • https://cdn.shopify.com/s/files/1/0434/5911/7206/files/fallout_4_bounty_hunter_mod.pdf
    • https://cdn.shopify.com/s/files/1/0435/6413/8651/files/62879427671.pdf
    • https://cdn.shopify.com/s/files/1/0440/6444/0472/files/luvuzevapagowoxeriv.pdf
    • https://cdn.shopify.com/s/files/1/0429/7916/4314/files/mind_reader_lior_suchard.pdf
    • https://cdn.shopify.com/s/files/1/0435/8393/0527/files/budgeting_and_financial_management_for_nonprofit_organizations_weikart.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_off00005d0d.bin
04264ef87da204ea78997c7f9e63375488cd0947f887b151ee0c0750ac105431
pdf-font-stream PDF embedded font (sfnt) at offset 0x5D0D 5368 bytes
font_01_sfnt_off00006f6d.bin
ac738da298d52f546dfab9a2298dcaa72e2b0b74f0ede56f8e276e411995dcfe
pdf-font-stream PDF embedded font (sfnt) at offset 0x6F6D 10324 bytes