Malicious PDF — malware analysis report

Static analysis result for SHA-256 c4f2633ac4fe0dab…

MALICIOUS

PDF

59.8 KB Created: 2020-09-18 08:50:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 57f9bdc4bd1a40895af731ba1b1995c4 SHA-1: e5d0988921d4484782cc5df934095f06af767cf2 SHA-256: c4f2633ac4fe0dab2c6d1fff3858017d00ae55af1d10b38f61dedaaa3f40b347
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to known malicious redirectors or link farms. The document body, though heavily obfuscated, contains text related to academic worksheets and includes a prominent malicious URL. This suggests a social engineering attempt to drive traffic to malicious infrastructure, likely for further exploitation or malware delivery.

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.me/wix?keyword=chapter+17+section+2+trade+in+renaissance+europe+worksheet+answers
    • http://files.kcorneliusimagesandmarketing.com/uploads/1/3/0/7/130775363/tojokebamaxujod.pdf
    • http://bexepus.makealltimetreasures.org/uploads/1/3/0/7/130740146/pazuwok_nugisiribez_fawowil_kevibogogofi.pdf
    • http://files.crochetmilie.com/uploads/1/3/1/4/131437005/gogufuj.pdf
    • http://sadujiv.ridgelinefarm.org/uploads/1/3/1/6/131637279/lurejomugoraje.pdf
    • http://files.speedandsprocket.com/uploads/1/3/1/4/131407233/pojonesebakusefut.pdf
    • http://files.yew360.com/uploads/1/3/1/4/131482821/jifememi-vavokat-vodapovofobo-soxaferaf.pdf
    • http://files.amaliejahn.com/uploads/1/3/0/9/130969717/d9738c3e.pdf
    • http://fovumus.artisanhandfood.com/uploads/1/3/0/8/130814591/dulekuke.pdf
    • http://wadubulub.morethanahandyman.org/uploads/1/3/0/7/130740019/4820869.pdf
    • http://files.alaskaexpeditiontours.com/uploads/1/3/0/9/130969371/3628370.pdf
    • https://cdn.shopify.com/s/files/1/0440/9766/7224/files/jolimojix.pdf
    • https://cdn.shopify.com/s/files/1/0437/0428/7383/files/xazinofiletowan.pdf
    • https://cdn.shopify.com/s/files/1/0431/7881/9735/files/65459495635.pdf
    • https://cdn.shopify.com/s/files/1/0451/4293/3657/files/game_design_merit_badge_pamphlet.pdf
    • https://cdn.shopify.com/s/files/1/0433/3882/5887/files/papebuzotusobo.pdf
    • https://cdn.shopify.com/s/files/1/0431/8196/5461/files/fufabe.pdf
    • https://cdn.shopify.com/s/files/1/0459/6485/3408/files/xonaler.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_off000093b0.bin
31e6b0d792065519343e4aebb321a8f45aadda33dffe98ea4e81e3974cfc0f8d
pdf-font-stream PDF embedded font (sfnt) at offset 0x93B0 5452 bytes
font_01_sfnt_off0000a656.bin
ef374abcf3c17bb5b3ff467a0a96234f468cd3d61677dd71157385915040533d
pdf-font-stream PDF embedded font (sfnt) at offset 0xA656 14576 bytes
font_02_sfnt_off0000d395.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3
pdf-font-stream PDF embedded font (sfnt) at offset 0xD395 4324 bytes