Malicious PDF — malware analysis report

Static analysis result for SHA-256 85994ff8759d0cd6…

MALICIOUS

PDF

51.7 KB Created: 2020-08-12 02:42:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a535d1133947f60a27d105f66c7b7e07 SHA-1: acb9c071ad3fead0efc0b042154d9901a994bb05 SHA-256: 85994ff8759d0cd6fc6ee4824fdcf556b98ee01b4f606fdab99e122d05f45315
128 Risk Score

Malware Insights

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

The PDF contains a link farm and a malicious redirector, indicating a phishing or scam attempt. The document body, though partially corrupted, suggests a lure related to 'interview questions for marketing manager pdf'. The primary malicious IOC is the redirector URL, which likely leads to further malicious content or exploits. 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.com/pify?keyword=interview+questions+for+marketing+manager+pdf
    • http://files.findest.eu/uploads/1/3/1/6/131606118/muxugugudarok-susekotuborodir-gedasukafumag-saxuwokug.pdf
    • http://files.greatexpectationsknoxville.com/uploads/1/3/0/8/130874361/7872f5.pdf
    • http://files.premierpoolnaples.com/uploads/1/3/1/0/131070238/d0e8edb4.pdf
    • https://cdn.shopify.com/s/files/1/0433/1231/6584/files/vivesizijesuvavelupa.pdf
    • https://cdn.shopify.com/s/files/1/0445/7952/0676/files/fedex_commercial_invoice.pdf
    • https://cdn.shopify.com/s/files/1/0437/4783/6065/files/42219182252.pdf
    • https://cdn.shopify.com/s/files/1/0434/4637/0471/files/cutaneous_anthrax.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/palafasejuzanuz.pdf
    • https://cdn.shopify.com/s/files/1/0433/0032/3478/files/calentadores_solares.pdf
    • https://cdn.shopify.com/s/files/1/0438/8821/4171/files/asrock_z75_pro3.pdf
    • https://cdn.shopify.com/s/files/1/0440/4133/9030/files/assassin_s_creed_ds.pdf
    • https://cdn.shopify.com/s/files/1/0431/9540/0349/files/free_acupressure_point_chart.pdf
    • https://cdn.shopify.com/s/files/1/0435/1678/8900/files/juju_hunter_potion.pdf
    • https://cdn.shopify.com/s/files/1/0431/3094/5693/files/cracking_the_coding_interview_189_programming_questions_and_solutions.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_off00008bb5.bin
7f1a1594a93ca9c964d0a618186c0569068d54dc88d7b3dc117c37522ed209f4
pdf-font-stream PDF embedded font (sfnt) at offset 0x8BB5 5608 bytes
font_01_sfnt_off00009ec4.bin
8393dfa2159f52e744b6ffb7c171e763085aa3e955169e194e7f72df0dc56e66
pdf-font-stream PDF embedded font (sfnt) at offset 0x9EC4 10412 bytes