Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b24020b0dffe5aa…

MALICIOUS

PDF

56.9 KB Created: 2020-08-23 11:57:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 60a46d130d435f35db9fb95e13421469 SHA-1: 488514f8cb82c2446b53a94595a0f51a8377eb3c SHA-256: 1b24020b0dffe5aac958c1a5a575786ec2cb1a9569be679eb584c3022d4e77f1
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file was flagged for containing a malicious redirector link and a large number of external PDF links, suggesting a link farm or redirection scheme. The primary malicious URL identified is https://ttraff.ru/pify?keyword=cetacean+poem+pdf. While no scripts were extracted, the structure and heuristics strongly indicate an attempt to lure users to 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=cetacean+poem+pdf
    • http://files.mimisbooksandmore.com/uploads/1/3/1/3/131384660/xudokorud-xerufov.pdf
    • https://cdn.shopify.com/s/files/1/0438/4423/9510/files/duguju.pdf
    • https://cdn.shopify.com/s/files/1/0451/2360/0538/files/d_n_a_full_form_in_medical.pdf
    • https://cdn.shopify.com/s/files/1/0440/1856/5270/files/geometry_circles_and_arcs_worksheet_answers.pdf
    • https://cdn.shopify.com/s/files/1/0433/3142/0319/files/simon_sinek_infinite_game.pdf
    • https://cdn.shopify.com/s/files/1/0433/4652/6376/files/new_bhakti_dj_song_2019.pdf
    • https://cdn.shopify.com/s/files/1/0436/4537/0528/files/57030993779.pdf
    • https://cdn.shopify.com/s/files/1/0438/9902/7611/files/84519959049.pdf
    • https://cdn.shopify.com/s/files/1/0433/6504/0286/files/sobelurejavemeb.pdf
    • https://cdn.shopify.com/s/files/1/0434/8978/8070/files/oxford_advanced_english_dictionary_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/25006313747.pdf
    • https://cdn.shopify.com/s/files/1/0437/0202/6393/files/14887562128.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_off00009655.bin
460c7ccc9cccb02656bfe51531e5d7e57c970022f1ebc028095d24006e3a54d9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9655 4756 bytes
font_01_sfnt_off0000a664.bin
20c87a47b83fc30304f2faa509f13e0f0eb6b104ca77e9170606b4750d330f60		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA664 10120 bytes
font_02_sfnt_off0000c90b.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC90B 4324 bytes

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