Malicious PDF — malware analysis report

Static analysis result for SHA-256 35fa9fabf0373a24…

MALICIOUS

PDF

61.0 KB Created: 2020-08-11 15:00:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 89e4c7390e12f83146d8d9e6f56a499c SHA-1: 309bd53088cf93784d71c1ca1462ec6e764e26bc SHA-256: 35fa9fabf0373a24623632e3731f2daa10dabc07c5c0172e3c8656c6af0089d5
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a mass of external links, including a critical redirector link to 'https://ttraff.ru/pify?keyword=apartment+lease+application+pdf'. This indicates a phishing or scam attempt, likely to direct users to malicious content under the guise of a lease application. No scripts were extracted, limiting the analysis of direct payload execution.

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=apartment+lease+application+pdf
    • http://jazurukuz.friendshipfiles.com/uploads/1/3/1/3/131383332/vodigoruf.pdf
    • http://files.ukcitizenshipbyinvestment.com/uploads/1/3/0/7/130740298/9427040.pdf
    • http://files.nataliecanderson.com/uploads/1/3/1/4/131484728/6b5b666ad2b1d44.pdf
    • http://files.tallahasseezoom.org/uploads/1/3/1/1/131164273/tiwesi_gazogutapan.pdf
    • http://files.ltlfitness.net/uploads/1/3/2/6/132680869/bumor-pufogomujeg-bozov-mosuzemisatu.pdf
    • https://cdn.shopify.com/s/files/1/0429/8267/0485/files/natanijatenotizixekula.pdf
    • https://cdn.shopify.com/s/files/1/0433/2634/1272/files/alessandro_baricco_ocean_sea.pdf
    • https://cdn.shopify.com/s/files/1/0431/0079/9140/files/bajilururip.pdf
    • https://cdn.shopify.com/s/files/1/0429/6015/8873/files/61231443464.pdf
    • https://cdn.shopify.com/s/files/1/0428/4160/4263/files/95255855643.pdf
    • https://cdn.shopify.com/s/files/1/0431/5293/3020/files/dozud.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/15796621189.pdf
    • https://cdn.shopify.com/s/files/1/0432/1542/1600/files/canticos_espirituales.pdf
    • https://cdn.shopify.com/s/files/1/0433/5288/3352/files/welefapikuzixidebixajixa.pdf
    • https://cdn.shopify.com/s/files/1/0438/8909/8907/files/convert_html_to_c_free.pdf
    • https://cdn.shopify.com/s/files/1/0430/7605/9290/files/50070535188.pdf
    • https://cdn.shopify.com/s/files/1/0428/5962/6655/files/redact_text_free.pdf
    • https://cdn.shopify.com/s/files/1/0435/2121/2570/files/77350215270.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_off0000b0ef.bin
b08b45841a726527bfceb03de1c3c84b1e76758fc571be099e2e745149b49d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB0EF 5288 bytes
font_01_sfnt_off0000c2c9.bin
0e7dfffc55d64991412ff3ff2448cd64b2e588d2c7a1ecc86331b081b0b00a5c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC2C9 10500 bytes

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