Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd82ad6565cef7dc…

MALICIOUS

PDF

43.2 KB Created: 2020-08-30 20:16:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4516b4934d59d3aec194a6a8b94c0a17 SHA-1: 181a1e3d818e353bce2b0828b46810f09adf1d0a SHA-256: dd82ad6565cef7dc05411bda654af1c270a2ccd64e1f0044fa7afc5b9515beb1
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.ru/wix?keyword=aashiqui+3+full+movie+free'. The document body, though heavily obfuscated, also contains this URL, suggesting it's the primary lure. The file also contains a large number of embedded links, many pointing to Shopify domains, which is indicative of a link farm for SEO poisoning or distributing malicious content. No scripts were extracted from this sample.

Heuristics 3

  • 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.
  • 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/wix?keyword=aashiqui+3+full+movie+free
    • https://cdn.shopify.com/s/files/1/0448/3439/0178/files/beechen_cliff_sixth_form_term_dates.pdf
    • https://cdn.shopify.com/s/files/1/0431/0574/7108/files/basazagipelamipabi.pdf
    • https://cdn.shopify.com/s/files/1/0432/4655/1208/files/vokigojeku.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kevaziretojigadogikoranab.pdf
    • https://static.usrfiles.com/ugd/71fd01_fa12e45ecac546d08797be935b4645e6.pdf
    • https://static.usrfiles.com/ugd/b9801a_273100a77c794c9793991e5283d3d6dd.pdf
    • https://static.usrfiles.com/ugd/0b46e6_40ad612d97f7405493e5475a8aa20291.pdf
    • https://static.usrfiles.com/ugd/de65f7_9555d4e9b23c4ab6ae3ec2c6946872bf.pdf
    • https://static.usrfiles.com/ugd/60933b_1ba37bf2a7db45ca9efa102fd0c5de42.pdf
    • https://static.usrfiles.com/ugd/b8c837_66def0301fec4b8982a9bcd60fb46537.pdf
    • https://static.usrfiles.com/ugd/f0e51d_a3d62413912049f79ff8757580e9dda7.pdf
    • https://static.usrfiles.com/ugd/8e1900_b7da8753ae62480780c5f30e6a6fa4b5.pdf
    • https://static.usrfiles.com/ugd/b8c837_782af9f86f0f42eb96f5965a607cb2f8.pdf
    • https://cdn.shopify.com/s/files/1/0433/9331/9079/files/butoxozovalotodi.pdf
    • https://cdn.shopify.com/s/files/1/0441/4255/9384/files/applied_maths_2_book.pdf
    • https://cdn.shopify.com/s/files/1/0430/7209/4362/files/9566986185.pdf
    • https://cdn.shopify.com/s/files/1/0431/8740/4968/files/89799303728.pdf
    • https://cdn.shopify.com/s/files/1/0430/0544/4259/files/pawarefefavuxuf.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_off00006971.bin
e8db6b653b30d48e0b8db8d5cb178663ee0ded02f2f49915de64adc3f44f1944
pdf-font-stream PDF embedded font (sfnt) at offset 0x6971 5348 bytes
font_01_sfnt_off00007b87.bin
8a365fe5f7608ddcba270b01be95f2808e7c17c45efc27e6a8debed5dee7745f
pdf-font-stream PDF embedded font (sfnt) at offset 0x7B87 10864 bytes