Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d9e185fa7609887…

MALICIOUS

PDF

38.5 KB Created: 2020-08-21 16:50:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3f187c29caed8a74c2f0a11cf84229bb SHA-1: 2f34fef50e14e7a5ab9e0a0703688b406549bb7e SHA-256: 9d9e185fa7609887d897e10dc5a0b7b32615b2aa1b8f897a70d41fb8d3d7cc48
120 Risk Score

Malware Insights

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

The PDF file contains numerous links, including one pointing to a known malicious redirector at 'https://ttraff.com/pify?keyword=kissing+baby+pictures'. The document body, though partially corrupted, also contains this URL and references to 'wkhtmltopdf', suggesting it was generated programmatically. The presence of a link farm heuristic further indicates an attempt to distribute malicious content or lure users to malicious sites. No scripts were extracted, but the overall structure points to a phishing or redirection attack.

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.com/pify?keyword=kissing+baby+pictures
    • http://files.melco-audio-masters.com/uploads/1/3/2/3/132303282/912797.pdf
    • http://files.chateaumae.com/uploads/1/3/2/8/132814990/zimuvedofiba.pdf
    • http://files.georgiaamarfineart.com/uploads/1/3/0/7/130775505/1752360.pdf
    • http://files.bopmusicschool.org.nz/uploads/1/3/1/4/131437172/9664d77cde.pdf
    • http://gelep.dirtbagcoffin.com/uploads/1/3/1/8/131856827/pasolo.pdf
    • https://cdn.shopify.com/s/files/1/0432/6873/5140/files/vesinozemogukabu.pdf
    • https://cdn.shopify.com/s/files/1/0434/5636/4709/files/26816272226.pdf
    • https://cdn.shopify.com/s/files/1/0430/3552/5282/files/wodorum.pdf
    • https://cdn.shopify.com/s/files/1/0432/2082/8315/files/joint_of_normal_distribution.pdf
    • https://cdn.shopify.com/s/files/1/0431/6905/4886/files/reporting_car_accident_to_police.pdf
    • https://cdn.shopify.com/s/files/1/0433/9492/4700/files/lutte_contre_les_acariens.pdf
    • https://cdn.shopify.com/s/files/1/0431/3687/6695/files/us_passport_renewal.pdf
    • https://cdn.shopify.com/s/files/1/0430/1848/5923/files/aisi_1080_material_properties.pdf
    • https://cdn.shopify.com/s/files/1/0432/9222/9787/files/12th_class_chemistry_textbook.pdf
    • https://cdn.shopify.com/s/files/1/0429/9338/5633/files/gafasatixokumu.pdf
    • https://cdn.shopify.com/s/files/1/0463/1766/6461/files/favezovazi.pdf
    • https://cdn.shopify.com/s/files/1/0431/1882/1530/files/biology_book_class_12_free_download.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_off0000480f.bin
9458a290565c69ebb16d882033dff58e95086bf0be3095eb6a4873b68c828405		 pdf-font-stream PDF embedded font (sfnt) at offset 0x480F 5052 bytes
font_01_sfnt_off00005947.bin
a36eee06fef6ce219692c4ec918276ac99413e4fd1e3666e4031624f9289d620		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5947 1800 bytes
font_02_sfnt_off000061d3.bin
12e7e3413542e9a5cf94de2c9c7853d5d3743f511aa232fc956954833fa981d3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61D3 8364 bytes
font_03_sfnt_off00007e71.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E71 4324 bytes

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