Malicious PDF — malware analysis report

Static analysis result for SHA-256 940044d6d47de177…

MALICIOUS

PDF

54.8 KB Created: 2020-08-05 05:56:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8d6a8f52b8c45d40053ff49be7ecb639 SHA-1: d314a5e53c39096148074d4d73c744192264a799 SHA-256: 940044d6d47de1775c26ffacca77743766af53cf84f80e12172fc86d8df5c2d4
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, many of which point to a suspicious redirector domain (ttraff.ru). The heuristic PDF_SEO_LINK_FARM indicates a link farm strategy, and PDF_MALICIOUS_REDIRECTOR_LINK confirms the presence of a malicious redirector. The document body, though heavily obfuscated, contains references to the redirector URL and other Shopify-hosted PDF files, suggesting a lure to external malicious content.

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/pify?keyword=generate+pdf+java+spring+mvc
    • http://files.threecolourbeauty.com/uploads/1/3/2/7/132740700/fedixelazijupikeje.pdf
    • http://files.stainlesssteelstaysbeautiful.com/uploads/1/3/0/7/130739697/2595812.pdf
    • http://files.realsourceadvisors.com/uploads/1/3/1/3/131382217/geres.pdf
    • https://cdn.shopify.com/s/files/1/0431/6332/0469/files/class_path_contains_multiple_slf4j_bindings.pdf
    • https://cdn.shopify.com/s/files/1/0437/8404/4705/files/mivofakaxuxajebajivo.pdf
    • https://cdn.shopify.com/s/files/1/0430/0288/8351/files/79499553398.pdf
    • https://cdn.shopify.com/s/files/1/0430/8015/5290/files/gosovarepekevilokipozigi.pdf
    • https://cdn.shopify.com/s/files/1/0429/7303/6697/files/motogp_2016_tv_schedule.pdf
    • https://cdn.shopify.com/s/files/1/0431/6105/9482/files/dozagunapufaxopuwilebijo.pdf
    • https://cdn.shopify.com/s/files/1/0438/8922/9979/files/suxuzub.pdf
    • https://cdn.shopify.com/s/files/1/0432/7879/4920/files/apqp_ppap.pdf
    • https://cdn.shopify.com/s/files/1/0432/5317/0334/files/16350561109.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/sovir.pdf
    • https://cdn.shopify.com/s/files/1/0428/0716/5095/files/63814282152.pdf
    • https://cdn.shopify.com/s/files/1/0434/8762/5369/files/nds_pokemon_rom_hacks.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006b4f.bin
7c52035b91332806e2c3a7706a076071725ad4898979c27bf0410f6d2c4eb4ec		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B4F 5608 bytes
font_01_sfnt_off00007e5d.bin
6d2a3a16cc464ce72cf05976c7f96a31c93af2202e0dc760c37a694345e222ee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E5D 1800 bytes
font_02_sfnt_off000086ed.bin
9ce0b56ab686bee2fa71064fe5a98428a5548ee094110a52949f7c360014d8a8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x86ED 15704 bytes
font_03_sfnt_off0000b7be.bin
31aa257675234f953cb39254c73a0c002637764ec2691c470e0912636c3685cf		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB7BE 16204 bytes

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