Malicious PDF — malware analysis report

Static analysis result for SHA-256 fcaec4cf30668f2c…

MALICIOUS

PDF

44.8 KB Created: 2020-08-25 17:22:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 60f2fbda01324a3f1b87a857f70501d1 SHA-1: 55742b3258de09bdf363be66759a12b07d92aee9 SHA-256: fcaec4cf30668f2c7428715e27d1b459d44bbe6ac127bd4ce2762db6e526394d
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, with a critical heuristic firing indicating a link farm and a malicious redirector. The primary malicious URL identified is https://ttraff.ru/pify?keyword=tools+for+formative+assessment+pdf, which is likely used to obscure the true destination of the attack. The document body itself is largely unreadable binary data, but the presence of numerous links suggests a phishing or redirection-based attack vector.

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=tools+for+formative+assessment+pdf
    • http://viluni.esi-components.com/uploads/1/3/1/3/131381706/2799568.pdf
    • http://wafevim.johnfnorland.com/uploads/1/3/0/8/130874683/69e58df0.pdf
    • http://fiwokefa.nohsfamily.com/uploads/1/3/0/7/130740596/f57a3939595.pdf
    • http://sovejol.journeybackancestry.com/uploads/1/3/1/3/131379874/0e78fa6d.pdf
    • http://gujazazi.midwaypantherchoir.org/uploads/1/3/2/6/132695742/2644208.pdf
    • https://cdn.shopify.com/s/files/1/0430/8307/1642/files/animal_farm_chapter_summaries.pdf
    • https://cdn.shopify.com/s/files/1/0429/8499/7025/files/97514064485.pdf
    • https://cdn.shopify.com/s/files/1/0459/0531/3946/files/certina_1888_ds_podium_titanium_manual.pdf
    • https://cdn.shopify.com/s/files/1/0432/3013/4427/files/10841128949.pdf
    • https://cdn.shopify.com/s/files/1/0431/7003/7917/files/39116226844.pdf
    • https://cdn.shopify.com/s/files/1/0432/2669/3789/files/gepigexeri.pdf
    • https://cdn.shopify.com/s/files/1/0430/6635/9962/files/25825280681.pdf
    • https://cdn.shopify.com/s/files/1/0431/7747/6253/files/33040165104.pdf
    • https://cdn.shopify.com/s/files/1/0449/5484/5352/files/strong_adjectives_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0430/6881/7569/files/51274026494.pdf
    • https://cdn.shopify.com/s/files/1/0432/8767/5036/files/vegusekaluziganuwajusom.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_off00007224.bin
02de5fbdfdc84bc9f4c6c01bf84ba1bd7baa0b58976f1b584d4628d02d5a47b4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7224 5196 bytes
font_01_sfnt_off000083b5.bin
dacdcbc742d9c7cb86b3b47bdbe876af85500151dc076bf963e2490526a6c1e7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x83B5 10156 bytes

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