Malicious PDF — malware analysis report

Static analysis result for SHA-256 b57fa7ef0298f861…

MALICIOUS

PDF

39.8 KB Created: 2020-08-13 23:49:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: acd6df77c365fd24c7c5f02de2354290 SHA-1: e1ada4e9aef374b5246c726f93b77e50c925c467 SHA-256: b57fa7ef0298f861801781fe10ff99fdbf0722459e9448f79f022ea935db1e56
128 Risk Score

Malware Insights

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

The PDF contains a prominent link disguised as a download for 'zombie catchers hack mod app'. This link redirects to ttraff.ru, which is flagged as a malicious redirector. The document also exhibits characteristics of a link farm, with numerous embedded URLs pointing to external PDFs, many hosted on Shopify. The presence of a 'download button' heuristic further supports the lure. No scripts were extracted from this sample.

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.ru/pify?keyword=zombie+catchers+hack+mod+app
    • http://files.columbiapage.com/uploads/1/3/2/6/132696174/eee9261c2294d0.pdf
    • http://files.pawneeil.net/uploads/1/3/1/4/131407572/xafolanum_gejeraxesag_paxub_zovawenavat.pdf
    • http://files.lunaleathers.com/uploads/1/3/0/7/130738850/gofukaxududepi.pdf
    • http://files.directinservicetraining.com/uploads/1/3/1/6/131606027/cc2d120640221.pdf
    • http://files.kirkistownprimaryschool.com/uploads/1/3/2/7/132740424/ded228e599a0071.pdf
    • https://cdn.shopify.com/s/files/1/0428/2135/3635/files/tenaresi.pdf
    • https://cdn.shopify.com/s/files/1/0432/5369/4626/files/zegemuxitifafosofenoxar.pdf
    • https://cdn.shopify.com/s/files/1/0435/4949/1359/files/dexisugupixabuxemag.pdf
    • https://cdn.shopify.com/s/files/1/0435/6187/7665/files/clinical_laboratory_hematology_2nd_edition.pdf
    • https://cdn.shopify.com/s/files/1/0433/3033/8966/files/jagolukekibovukena.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/91025233068.pdf
    • https://cdn.shopify.com/s/files/1/0439/9644/6878/files/canopus_advc_110.pdf
    • https://cdn.shopify.com/s/files/1/0428/3380/5471/files/kajasowopiruwisoki.pdf
    • https://cdn.shopify.com/s/files/1/0431/3051/9716/files/dutegikigade.pdf
    • https://cdn.shopify.com/s/files/1/0432/4291/3955/files/anestesia_regional_intravenosa.pdf
    • https://cdn.shopify.com/s/files/1/0434/7727/0692/files/darededirifizemogad.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nemevisofopanufu.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_off00005eae.bin
10a91b49f2bbb7d6ea4e8cd5800f8eaa3448ff99156ead4549d92303d92fd2d6
pdf-font-stream PDF embedded font (sfnt) at offset 0x5EAE 5444 bytes
font_01_sfnt_off00007105.bin
b7413ae204f1021fbd670cb72729439e1b838d77b060630dc70b5f4b303dbd70
pdf-font-stream PDF embedded font (sfnt) at offset 0x7105 9716 bytes