Malicious PDF — malware analysis report

Static analysis result for SHA-256 a44c58daea2ecda1…

MALICIOUS

PDF

54.3 KB Created: 2020-08-14 20:22:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9ef03b270edf4820a7d96833775a7be1 SHA-1: 1a6dad8cdc1885b9ad0eadcd731ddafcac61f899 SHA-256: a44c58daea2ecda1de5dd6b0f31cf9b484868e551bd6b1fa99be6042d1d4d8ac
160 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a software crack, designed to lure users to a malicious site. The document also functions as a link farm, pointing to numerous other PDFs hosted on Shopify. The presence of a password-protected archive lure suggests an attempt to bypass gateway security by encrypting the actual payload.

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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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=autodesk+3ds+max+2014+crack
    • http://nojebitip.smoothguide-kenyacoast.com/uploads/1/3/0/8/130813528/suwadupon.pdf
    • http://files.thediretheatre.com/uploads/1/3/1/3/131398367/livumomorawegije.pdf
    • http://files.rockhillbaptist.org/uploads/1/3/1/4/131438471/buvume_rujefag_liwugajakove.pdf
    • http://files.jocoworks.net/uploads/1/3/1/6/131606268/6424483.pdf
    • https://cdn.shopify.com/s/files/1/0430/7091/4717/files/tizilobonufogunom.pdf
    • https://cdn.shopify.com/s/files/1/0433/7847/5162/files/76869739666.pdf
    • https://cdn.shopify.com/s/files/1/0428/8207/2739/files/equilibrio_acido_base_respiratorio.pdf
    • https://cdn.shopify.com/s/files/1/0435/8737/1171/files/99595076391.pdf
    • https://cdn.shopify.com/s/files/1/0429/9309/0714/files/21228452310.pdf
    • https://cdn.shopify.com/s/files/1/0430/4217/7181/files/liwijidefovurejuwowo.pdf
    • https://cdn.shopify.com/s/files/1/0429/7634/6266/files/83263704233.pdf
    • https://cdn.shopify.com/s/files/1/0429/5163/9196/files/podokif.pdf
    • https://cdn.shopify.com/s/files/1/0437/2476/7400/files/women_within_catalog.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/51507598499.pdf
    • https://cdn.shopify.com/s/files/1/0428/7086/6076/files/graphic_design_in_architecture.pdf
    • https://cdn.shopify.com/s/files/1/0428/8072/9251/files/pibunexetilewafatib.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
stream_004_off00007a5d.bin
3585cbcf491efd87ff13c3a0373c99ceca4c58577b3b0e0d9230fd3ec691310d
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x7A5D 13720 bytes
font_00_sfnt_off000066da.bin
bf463d96695ea65d021bb7dea2ae25c1259215c6102d4d8e6b2746182a485f09
pdf-font-stream PDF embedded font (sfnt) at offset 0x66DA 5752 bytes
font_02_sfnt_off0000a124.bin
23b1cf85ff5069a5aa220b51263e9487b620fdcbed3f82c348084ead4c5c14a5
pdf-font-stream PDF embedded font (sfnt) at offset 0xA124 13608 bytes