Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8fc91e324b5ca0c…

MALICIOUS

PDF

312.4 KB Created: 2020-08-11 05:11:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ef56182ee17512a7bfab803f33dd5ccd SHA-1: 108dbb239418aa4a9f04d830e185a60fe1673320 SHA-256: a8fc91e324b5ca0c5c5bf7e43c283fe6e01d7b0431b8a444a82d7b0203da5ecb
92 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to ttraff.com. The ML classifier also flagged this PDF with high confidence. The document body, though heavily obfuscated, contains the same URL, reinforcing the malicious intent. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9890

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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=berliner+platz+2+neu+glossar+deutsch+englisch+pdf
    • http://fumap.socalttc.net/uploads/1/3/1/4/131406885/megiwikigof_xikimonejur.pdf
    • http://wosenevim.conversationswiththewomb.com/uploads/1/3/1/4/131483453/zasesukuxezus.pdf
    • http://vibuke.yupikuity.com/uploads/1/3/2/8/132815002/wekunav_xavobogenanapep_memotinezot.pdf
    • http://files.bessjacques.com/uploads/1/3/1/3/131379085/2248681.pdf
    • https://cdn.shopify.com/s/files/1/0441/4016/7320/files/sovisisodo.pdf
    • https://cdn.shopify.com/s/files/1/0445/2201/2831/files/zusovowa.pdf
    • https://cdn.shopify.com/s/files/1/0427/4136/6951/files/72439046560.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/sejil.pdf
    • https://cdn.shopify.com/s/files/1/0431/2052/5469/files/15562823994.pdf
    • https://cdn.shopify.com/s/files/1/0436/8793/6150/files/tracheobronchial_tree_anatomy.pdf
    • https://cdn.shopify.com/s/files/1/0432/7889/3214/files/86655341854.pdf
    • https://cdn.shopify.com/s/files/1/0435/1868/9434/files/manuale_biblioteconomia.pdf
    • https://cdn.shopify.com/s/files/1/0435/3461/4688/files/tepalesesenuforogogikikuv.pdf
    • https://cdn.shopify.com/s/files/1/0447/5827/0101/files/ciclo_de_vida_de_los_ascomicetos.pdf
    • https://cdn.shopify.com/s/files/1/0433/0985/8984/files/fupaferufobila.pdf
    • https://cdn.shopify.com/s/files/1/0436/5202/2430/files/13600803798.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000459ac.bin
7f8d84f279369098eff929b81254410c3caa7ba096a52b3ad4234465cd67bf56		 pdf-font-stream PDF embedded font (sfnt) at offset 0x459AC 1604 bytes
font_01_sfnt_off000461d4.bin
51212044e3033e3c1b7d5800a411318bd56f3e8999268dd01d480e1c48c2ff67		 pdf-font-stream PDF embedded font (sfnt) at offset 0x461D4 5648 bytes
font_02_sfnt_off00047503.bin
916c0bd974339f0a6ce44e8a63980f74a8825687bf76afce9ba3a7ba109f2064		 pdf-font-stream PDF embedded font (sfnt) at offset 0x47503 2388 bytes
font_03_sfnt_off00047f5c.bin
0fe776746ba215c5499fa78a7c135e45cc40acef9b09a944232398ce38bf37c5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x47F5C 19580 bytes
font_04_sfnt_off0004b98f.bin
6321a6493f5be0ebec4b153ba0f748c4e0cd8a42776005d3d9109756ab75c3be		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4B98F 16252 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.