Malicious PDF — malware analysis report

Static analysis result for SHA-256 a07b3566130daab1…

MALICIOUS

PDF

51.0 KB Created: 2020-08-20 03:05:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 181220b17e7554d64fd3c5af9fed385f SHA-1: c92b6fb1947a9bb40eca0742ed5c67c2b16fcf22 SHA-256: a07b3566130daab15c1c490fbaa2281d2e2fe0340a5f18a1321869d245c1938b
180 Risk Score

Malware Insights

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

The PDF contains a lure for free software (Charles proxy) which, when clicked, redirects to a malicious URL. The document also functions as a link farm, directing users to numerous other PDFs hosted on Shopify. The primary malicious URL is ttraff.cc, which is flagged as a redirector to malicious infrastructure. The document body contains garbled text but includes the malicious URL and references to 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.
  • Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE
    Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
  • 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=charles+proxy+3.+3.+1+free
    • http://files.dukeoptilab.org/uploads/1/3/0/9/130969553/towewikumiji_xosobe_xatuzewazir_kufitid.pdf
    • http://files.obviousvolcano.com/uploads/1/3/0/8/130874300/tosofitusiz.pdf
    • http://files.custom-compositions.com/uploads/1/3/0/7/130738928/daparuwa.pdf
    • https://cdn.shopify.com/s/files/1/0435/9880/7202/files/731407993.pdf
    • https://cdn.shopify.com/s/files/1/0430/6658/9335/files/ncoa_course_15_set_b.pdf
    • https://cdn.shopify.com/s/files/1/0434/8215/3112/files/lozivij.pdf
    • https://cdn.shopify.com/s/files/1/0430/4994/3202/files/56906637956.pdf
    • https://cdn.shopify.com/s/files/1/0435/9408/8611/files/44122616133.pdf
    • https://cdn.shopify.com/s/files/1/0430/7333/9559/files/business_plan_format_for_restaurant.pdf
    • https://cdn.shopify.com/s/files/1/0432/9226/2560/files/relikebenolan.pdf
    • https://cdn.shopify.com/s/files/1/0436/1951/6579/files/star_wars_imperial_march_sheet_music_trombone.pdf
    • https://cdn.shopify.com/s/files/1/0427/6820/3942/files/calculus_volume_2_narayanan_download.pdf
    • https://cdn.shopify.com/s/files/1/0437/1123/4199/files/accident_and_emergency_radiology_a_survival_guide.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000692c.bin
3c6502e04658d985b37ed967139d4b1bb7136c1c8ff06868e6b64c17630b7d50
pdf-font-stream PDF embedded font (sfnt) at offset 0x692C 2960 bytes
font_01_sfnt_off000073af.bin
7d7d62ee01b97a8b527193c69ece5151c86ec1427becdcdd5f156269e4deaf31
pdf-font-stream PDF embedded font (sfnt) at offset 0x73AF 5312 bytes
font_02_sfnt_off000085cc.bin
c5b1c2ea9a35cc8f87400dc4ff17ac5ce88447f2c9444fb1dab34a43f773bd46
pdf-font-stream PDF embedded font (sfnt) at offset 0x85CC 10316 bytes
font_03_sfnt_off0000a945.bin
7021aa4f129058994e5f4a49797ae2bd2b844c302d6e5650f7ffaa6fcc4017a8
pdf-font-stream PDF embedded font (sfnt) at offset 0xA945 16204 bytes