Malicious PDF — malware analysis report

Static analysis result for SHA-256 822a1cf248c846cf…

MALICIOUS

PDF

46.4 KB Created: 2020-08-18 19:15:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9c30fc5fca03320103f6500d61d16e9b SHA-1: c598b76f21b250275fc5aca66a8ce46b3dca387c SHA-256: 822a1cf248c846cffccef8db790f4570b83d3e032d29d2700d4b06ce09b1c9f7
140 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link and a link farm, suggesting it's designed to lead users to malicious sites. The document body, though partially corrupted, contains text related to financial reports and a URL that appears to be part of a lure. The presence of a callback lure heuristic further supports a phishing or scam intent. 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • 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=understanding+financial+reports+pdf
    • http://files.foodforthesoul.net/uploads/1/3/1/4/131406717/gakekajapisiju.pdf
    • http://files.academy.sanctafamilia.org/uploads/1/3/0/7/130739430/1361779.pdf
    • https://cdn.shopify.com/s/files/1/0434/4374/9029/files/antimalarial_drugs.pdf
    • https://cdn.shopify.com/s/files/1/0430/6314/8706/files/zotobuvivuta.pdf
    • https://cdn.shopify.com/s/files/1/0427/3831/9527/files/xujilaximix.pdf
    • https://cdn.shopify.com/s/files/1/0428/5179/5107/files/annex_10_icao.pdf
    • https://cdn.shopify.com/s/files/1/0428/9639/2348/files/discord_custom_css.pdf
    • https://cdn.shopify.com/s/files/1/0429/6291/1391/files/3996191951.pdf
    • https://cdn.shopify.com/s/files/1/0429/8850/3203/files/39976754743.pdf
    • https://cdn.shopify.com/s/files/1/0440/5464/2853/files/loxonabaronijikidesun.pdf
    • https://cdn.shopify.com/s/files/1/0434/1979/5623/files/certified_internal_audit_books.pdf
    • https://cdn.shopify.com/s/files/1/0428/6794/9724/files/kawinejimugose.pdf
    • https://cdn.shopify.com/s/files/1/0433/4537/9478/files/kegas.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_off0000756f.bin
af532a375f9cffa8410c002e2e69f31d39a7cfdc0edb4f1f4873a8c4d5a5241c
pdf-font-stream PDF embedded font (sfnt) at offset 0x756F 5312 bytes
font_01_sfnt_off00008786.bin
496dbcb1ad247e48ff4ddb9760999feffadaeac38bc7353f6b9e43c2aa44e74e
pdf-font-stream PDF embedded font (sfnt) at offset 0x8786 11068 bytes