Malicious PDF — malware analysis report

Static analysis result for SHA-256 996b4b80df63bf26…

MALICIOUS

PDF

39.1 KB Created: 2020-08-25 14:40:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 03b21751eb4b72dbd6431411abf0ae6b SHA-1: f102428c756bb2b2120c82469372e3ef383070cb SHA-256: 996b4b80df63bf26f1f0ce13bfe04af5457cace0fcf849dd1c32f93a2a40501a
148 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one specifically pointing to a malicious redirector. The document body and heuristic firings suggest a lure related to invoices or payments, encouraging users to click the provided link. The primary link, 'https://ttraff.com/pify?keyword=vyapar+premium+apk', is flagged as malicious, indicating a likely attempt to redirect the user to a harmful site or download unwanted software.

Heuristics 5

  • 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
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=vyapar+premium+apk
    • http://files.tryfluency.com/uploads/1/3/1/3/131378776/zufumamujunazew.pdf
    • http://files.sagetribeart.com/uploads/1/3/1/3/131398515/wulelolafipinub-tunevemogonem.pdf
    • http://fubakus.owsmoonshinecake.com/uploads/1/3/0/8/130874104/7473366.pdf
    • http://files.villadoradaapartments.com/uploads/1/3/0/8/130815228/wumuzezaj.pdf
    • http://files.dscarves.com/uploads/1/3/2/7/132712206/651969.pdf
    • https://cdn.shopify.com/s/files/1/0429/5327/7596/files/app_store_apk_install.pdf
    • https://cdn.shopify.com/s/files/1/0430/6989/8909/files/zezarunivavelorij.pdf
    • https://cdn.shopify.com/s/files/1/0435/4372/4186/files/93131840736.pdf
    • https://cdn.shopify.com/s/files/1/0432/2990/5058/files/vijuwarifubolokelunojesox.pdf
    • https://cdn.shopify.com/s/files/1/0438/4263/3890/files/9947323500.pdf
    • https://cdn.shopify.com/s/files/1/0439/8625/6030/files/assembler_avec_foxit.pdf
    • https://cdn.shopify.com/s/files/1/0431/7180/7381/files/dish_flex_pack_channel_list.pdf
    • https://cdn.shopify.com/s/files/1/0433/4341/3407/files/magiratuvolef.pdf
    • https://cdn.shopify.com/s/files/1/0435/1633/0152/files/dazilitizekusaro.pdf
    • https://cdn.shopify.com/s/files/1/0431/6138/7170/files/vebufabowozukaxiwojokumak.pdf
    • https://cdn.shopify.com/s/files/1/0428/9291/8947/files/spring_framework_specification.pdf
    • https://cdn.shopify.com/s/files/1/0433/2955/2552/files/73996302649.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_off00005d7a.bin
2fe798cae1048065daf770d36b04aaba319976bf9d3bcd3043dd30a0e386ca5f
pdf-font-stream PDF embedded font (sfnt) at offset 0x5D7A 4888 bytes
font_01_sfnt_off00006e0f.bin
f6e5aa7203359d4731b35aeb0f576254b7d7731d507fb0ecd96dc87d8f59f514
pdf-font-stream PDF embedded font (sfnt) at offset 0x6E0F 9936 bytes