Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca2bd733bc146f86…

MALICIOUS

PDF

49.6 KB Created: 2020-08-25 00:58:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2bb751726544778e97a8b9639d28d162 SHA-1: 1b3090d268f54a2b9b9671896212af4a6954d490 SHA-256: ca2bd733bc146f86e4c5d8d2e1919632f2188cbf77cdb8506d12206caf4f5e9b
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing indicating a malicious redirector. The document body, though heavily obfuscated, contains the URL https://ttraff.cc/pify?keyword=software+requirement+specification+pdf, suggesting a lure to a malicious site disguised as a software requirement specification. The ML classifier strongly supports the malicious verdict. No scripts were extracted, but the primary attack pattern involves redirecting users to malicious infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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.cc/pify?keyword=software+requirement+specification+pdf
    • http://files.rpdk9history.com/uploads/1/3/1/4/131482953/7485085.pdf
    • http://fizisafa.raleighwindowsanddoors.com/uploads/1/3/0/7/130775850/tatesozixewewug.pdf
    • http://files.arbmic.org/uploads/1/3/1/4/131452799/rekevelozuferofel.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gomejalubewetilukifij.pdf
    • https://cdn.shopify.com/s/files/1/0429/0802/4985/files/sudafodu.pdf
    • https://cdn.shopify.com/s/files/1/0440/3937/2965/files/cat_training_in_10_minutes.pdf
    • https://cdn.shopify.com/s/files/1/0452/5346/0130/files/tecnicas_y_herramientas_de_recoleccion_de_informacion.pdf
    • https://cdn.shopify.com/s/files/1/0434/1088/2714/files/24_hour_answering_service_reviews.pdf
    • https://cdn.shopify.com/s/files/1/0439/0024/0024/files/modeling_agency_company_profile.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/58829080427.pdf
    • https://cdn.shopify.com/s/files/1/0435/1016/9759/files/wokusirarodifuse.pdf
    • https://cdn.shopify.com/s/files/1/0430/5004/1495/files/69271623758.pdf
    • https://cdn.shopify.com/s/files/1/0460/5988/0603/files/forged_in_slurp_fortnite_cheat_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0435/9297/4499/files/breviario_de_alarico.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_off00007480.bin
965120a159aed138ab435c7070f1d38049a5499faa4a742d7fbaeba05dd9c1b3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7480 5472 bytes
font_01_sfnt_off0000870a.bin
cac7e611dcf5f43fb9e630e622c9f3ea5eba3d0f9a3e034398dc6d9d410887ed		 pdf-font-stream PDF embedded font (sfnt) at offset 0x870A 10616 bytes
font_02_sfnt_off0000ab25.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAB25 4324 bytes

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