Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9fa5b15a16e92fc…

MALICIOUS

PDF

46.1 KB Created: 2020-08-15 18:39:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 832fd12e51998c5b261e9ca244d97e23 SHA-1: 3e48f6343fa46f6e4fb77b5e45060aa7007f1905 SHA-256: a9fa5b15a16e92fc76f12f6f8c5f80b0513101ff3d282faf06060348a5841061
140 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.com'. The document body, though heavily obfuscated, also contains this URL and references a search query for 'journey to the center of the earth illustrated pdf'. Another critical heuristic indicates a PDF link farm, with many links hosted on cdn.shopify.com, though most of these appear benign. A medium heuristic suggests a callback phishing lure, consistent with the redirection attempt. The primary attack vector appears to be luring the user to click a link that leads to malicious infrastructure.

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.com/wb?keyword=journey%20to%20the%20center%20of%20the%20earth%20illustrated%20pdf
    • http://veniziro.aghsband.com/uploads/1/3/1/6/131607240/fexosumusanago_godaguxuw.pdf
    • https://cdn.shopify.com/s/files/1/0431/2511/2988/files/1077563483.pdf
    • https://cdn.shopify.com/s/files/1/0433/9875/8557/files/duvosaxodazafan.pdf
    • https://cdn.shopify.com/s/files/1/0432/4101/3412/files/85865269464.pdf
    • https://cdn.shopify.com/s/files/1/0436/9180/2777/files/67121098552.pdf
    • https://cdn.shopify.com/s/files/1/0437/2905/9991/files/satllite_canceling_stuck_tasks_runnnning.pdf
    • https://cdn.shopify.com/s/files/1/0437/5035/9194/files/pobixajiba.pdf
    • https://cdn.shopify.com/s/files/1/0431/6649/8965/files/5865966838.pdf
    • https://cdn.shopify.com/s/files/1/0430/8526/7097/files/ashokan_farewell_violin_duet.pdf
    • https://cdn.shopify.com/s/files/1/0443/5532/2012/files/bemikumusiguxelejofaba.pdf
    • https://cdn.shopify.com/s/files/1/0428/0962/2687/files/gulezibetikewudinulapogi.pdf
    • https://cdn.shopify.com/s/files/1/0431/4827/9970/files/72324267556.pdf
    • https://cdn.shopify.com/s/files/1/0433/5868/3291/files/wuwotora.pdf
    • https://cdn.shopify.com/s/files/1/0440/7122/3446/files/vikebakitu.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_off00006b74.bin
4b48544c0caeb72db63d333d1a27d4cca446ba42b0a2275194a80062a83a3da7
pdf-font-stream PDF embedded font (sfnt) at offset 0x6B74 5216 bytes
font_01_sfnt_off00007d2c.bin
6ad1f5e98defc5678c84bfbe00148da1a7fa89bf0b6e27fa1af1d974f351693d
pdf-font-stream PDF embedded font (sfnt) at offset 0x7D2C 9204 bytes
font_02_sfnt_off00009c91.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361
pdf-font-stream PDF embedded font (sfnt) at offset 0x9C91 4324 bytes