Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0b09dc5264bdeaf…

MALICIOUS

PDF

44.1 KB Created: 2020-08-20 00:04:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4f6361656af21ed0a01cdf3509b741fd SHA-1: 6d0dc13dc86f10fb23be2aad36f3fc2a706d5e67 SHA-256: d0b09dc5264bdeafdc5c5d38458e27681bcdaf1ac5a6bfaf2ff5a79d069cf3ca
140 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a link farm and a specific malicious redirector URL, disguised as exam materials. The primary malicious link is https://ttraff.cc/pify?keyword=neet+exam+question+paper+and+answer+key, which likely leads to further malicious content. The document also contains a callback lure, suggesting a potential social engineering tactic to trick users into calling a fraudulent support number. The presence of numerous links to external PDFs, many hosted on seemingly unrelated domains, indicates a link farm used for SEO poisoning or to distribute further payloads.

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.cc/pify?keyword=neet+exam+question+paper+and+answer+key
    • http://files.environments4lifelonglearning.com/uploads/1/3/1/0/131070212/bomod-pujuvozobifaxo.pdf
    • http://files.beverleywa.com/uploads/1/3/0/7/130775346/sirivogewimipe.pdf
    • http://muviw.betreatedwell.com/uploads/1/3/2/6/132695278/92791e4e.pdf
    • http://files.regeneratecounseling.com/uploads/1/3/0/7/130739891/f047877f4b2a.pdf
    • https://cdn.shopify.com/s/files/1/0429/6795/7658/files/89113155366.pdf
    • https://cdn.shopify.com/s/files/1/0431/4795/2294/files/56390510670.pdf
    • https://cdn.shopify.com/s/files/1/0428/1332/5471/files/47198029422.pdf
    • https://cdn.shopify.com/s/files/1/0434/4145/5254/files/nekorapesugajigim.pdf
    • https://cdn.shopify.com/s/files/1/0437/6569/4613/files/44410392768.pdf
    • https://cdn.shopify.com/s/files/1/0432/6916/1126/files/mipulunu.pdf
    • https://cdn.shopify.com/s/files/1/0430/8258/0130/files/24102675747.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/34007074416.pdf
    • https://cdn.shopify.com/s/files/1/0432/3049/4878/files/20619596330.pdf
    • https://cdn.shopify.com/s/files/1/0434/2113/9096/files/vekovuradewox.pdf
    • https://cdn.shopify.com/s/files/1/0438/5118/6336/files/zosutomemidevagufebelip.pdf
    • https://cdn.shopify.com/s/files/1/0438/2484/0861/files/playing_the_queen_s_gambit_lars_schandorff.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_off00006d5f.bin
2a893a46f3a7d1dc4085d28b7766f06ee26b473495ff050468c7f24b13533f2d
pdf-font-stream PDF embedded font (sfnt) at offset 0x6D5F 5492 bytes
font_01_sfnt_off0000801a.bin
8b66c819a6bfc0854abe2ffded1b6a91eabb39fc2838784b80b641e1a9d78a42
pdf-font-stream PDF embedded font (sfnt) at offset 0x801A 10288 bytes