Malicious PDF — malware analysis report

Static analysis result for SHA-256 3b1740915c581072…

MALICIOUS

PDF

67.4 KB Created: 2020-08-18 13:40:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a246bc8ced673ced96a8fd7662c0fa56 SHA-1: 7142849b53797e58748c13de04305e162ac7ba66 SHA-256: 3b1740915c581072e32afd59b5cdee6bd285b01c13ed4319a3a2442a93d7af62
128 Risk Score

Malware Insights

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

The PDF contains a link that redirects to malicious infrastructure, disguised as a download for a "Cognos 11 report studio guide". The PDF also contains a mass external link farm, suggesting a SEO poisoning or link farm tactic. The presence of a visual download button further supports the lure.

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.cc/pify?keyword=cognos+11+report+studio+guide
    • http://files.swallowthesea.com/uploads/1/3/1/4/131438308/veregibikoruve_vaxatit_munabuv.pdf
    • http://files.gobe-everyday.com/uploads/1/3/2/6/132696077/wigerafox_lojosuter_morisa_logoro.pdf
    • http://files.roadtriprip.com/uploads/1/3/1/4/131407802/rexipuke.pdf
    • http://xupoponu.nanaimoclippersmerch.com/uploads/1/3/1/4/131453329/b796357e54235.pdf
    • http://files.browncountyhumaneshelter.com/uploads/1/3/0/8/130873830/semitakugum.pdf
    • https://cdn.shopify.com/s/files/1/0428/9524/5475/files/50252573809.pdf
    • https://cdn.shopify.com/s/files/1/0427/5650/5756/files/kidosebonanemefevez.pdf
    • https://cdn.shopify.com/s/files/1/0431/0610/7552/files/personal_trainer_job_description_pdf.pdf
    • https://cdn.shopify.com/s/files/1/0437/6828/3294/files/63989910265.pdf
    • https://cdn.shopify.com/s/files/1/0433/8404/5719/files/84331905827.pdf
    • https://cdn.shopify.com/s/files/1/0427/8029/5334/files/jawubotewufosebinix.pdf
    • https://cdn.shopify.com/s/files/1/0432/5048/3368/files/2866213012.pdf
    • https://cdn.shopify.com/s/files/1/0436/9245/8152/files/gomal_university_ma_islamiat_date_sheet_2019.pdf
    • https://cdn.shopify.com/s/files/1/0429/5675/1002/files/payment_of_bonus_act_1965_project.pdf
    • https://cdn.shopify.com/s/files/1/0437/5507/7786/files/bosquejos_para_predicar_a_jovenes.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b775.bin
b5021b2e991bf5c4fd12f79b98ae01be269119c4c9a03fb0e52f23448d5c9bea
pdf-font-stream PDF embedded font (sfnt) at offset 0xB775 4840 bytes
font_01_sfnt_off0000c802.bin
698d651ff661c9dc662e7dbaafcc45adaedb7eb9c38e5940721f39c8cb49d042
pdf-font-stream PDF embedded font (sfnt) at offset 0xC802 13304 bytes
font_02_sfnt_off0000f2e7.bin
7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71
pdf-font-stream PDF embedded font (sfnt) at offset 0xF2E7 4324 bytes