Malicious PDF — malware analysis report

Static analysis result for SHA-256 27f28227df760a81…

MALICIOUS

PDF

48.8 KB Created: 2020-08-24 00:24:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3cd9a1f7cd2e516cfa822efb52f8fb5c SHA-1: 2c961bb780a8527dd41cdf4b7a63f006baa29d9b SHA-256: 27f28227df760a81ceaa610022b059766021f637a2c7b28e60d669f59cc15a09
120 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, 'https://ttraff.ru/pify?keyword=cleopatra+1963+full+movie+free', which is designed to lure users into clicking on what appears to be a movie download. The document body, though heavily corrupted, contains fragments suggesting a similar lure. The presence of numerous links to PDF files hosted on Shopify, some of which are benign, indicates a potential SEO poisoning or link farm tactic to distribute the malicious redirector.

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=cleopatra+1963+full+movie+free
    • http://files.longbeachcoastalchallenge.com/uploads/1/3/0/8/130814014/bezeneforilo_wejefovajinasu.pdf
    • http://files.aseatatthetable.org/uploads/1/3/1/4/131453615/5967286.pdf
    • https://cdn.shopify.com/s/files/1/0430/0662/3903/files/varicela_complicada_en_adultos.pdf
    • https://cdn.shopify.com/s/files/1/0436/0847/3763/files/rack_and_pinion_steering_system_report.pdf
    • https://cdn.shopify.com/s/files/1/0460/6561/5003/files/7128508816.pdf
    • https://cdn.shopify.com/s/files/1/0438/8962/3208/files/nufazufobeselaborunidija.pdf
    • https://cdn.shopify.com/s/files/1/0433/1218/5499/files/wijafowinakilolafezamibul.pdf
    • https://cdn.shopify.com/s/files/1/0437/3302/4929/files/28282245298.pdf
    • https://cdn.shopify.com/s/files/1/0431/0505/8976/files/m_audio_fast_track_pro_drivers.pdf
    • https://cdn.shopify.com/s/files/1/0432/0837/6482/files/netubizalexapekimi.pdf
    • https://cdn.shopify.com/s/files/1/0431/3936/7061/files/lesilomegesomagin.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_off00006573.bin
4c879b86963901f3cb26f1bdb834d6a7dadb75bbbb9dc32cfb39b0e8f075924a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6573 5360 bytes
font_01_sfnt_off0000779e.bin
3810f2df582d7c16c86fc8ab9cfb2c229c6687843d2a386595e0669b73c66e9e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x779E 11980 bytes
font_02_sfnt_off00009fc7.bin
e9fe716c2abc985b12a899a49d5539e4e8be1b56d50c083b30290d85a2a7c848		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9FC7 16092 bytes

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