Malicious PDF — malware analysis report

Static analysis result for SHA-256 955721a2d6957312…

MALICIOUS

PDF

34.0 KB Created: 2020-08-10 00:37:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: dec5f917ba921c805e38d5940dcd1bf3 SHA-1: 8bcdbd158f3b36ecd836e3fd0457051706d52f46 SHA-256: 955721a2d695731217256649009c8908a4b588f962b2baffe3ed7847e16fd21e
152 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, which is also present in the document body. This link, 'https://ttraff.cc/pify?keyword=analisis+data+penelitian+kualitatif+burhan+bungin+pdf', is designed to redirect users to potentially harmful content. The PDF also exhibits characteristics of a link farm, with numerous external PDF links, many hosted on cdn.shopify.com. The ML classifier strongly indicates maliciousness.

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=analisis+data+penelitian+kualitatif+burhan+bungin+pdf
    • http://files.bethellutheranlyfordtx.org/uploads/1/3/2/6/132695438/193374.pdf
    • http://files.autoencyclopedie.com/uploads/1/3/1/6/131636941/fuzaxu-popejolu-kapope-figafun.pdf
    • http://files.lacedbyleshea.com/uploads/1/3/0/7/130775679/fasalifolumokat.pdf
    • http://files.hw-crane.com/uploads/1/3/0/7/130776215/6b5a964afd1fe.pdf
    • http://files.browhouse.com/uploads/1/3/1/3/131383964/d5ed7c73e.pdf
    • https://cdn.shopify.com/s/files/1/0440/7456/5784/files/wiviwadezezij.pdf
    • https://cdn.shopify.com/s/files/1/0435/8553/6159/files/99326686353.pdf
    • https://cdn.shopify.com/s/files/1/0431/9654/7230/files/82060058930.pdf
    • https://cdn.shopify.com/s/files/1/0448/4333/5837/files/aptransco_ae_electrical_syllabus.pdf
    • https://cdn.shopify.com/s/files/1/0434/2641/4743/files/womatujixuzakix.pdf
    • https://cdn.shopify.com/s/files/1/0433/9063/2101/files/gevodaledakuk.pdf
    • https://cdn.shopify.com/s/files/1/0440/5549/4806/files/atomic_structure_notes_class_11.pdf
    • https://cdn.shopify.com/s/files/1/0437/0527/0427/files/ctet_2020_paper_1.pdf
    • https://cdn.shopify.com/s/files/1/0429/0894/2492/files/minecraft_account_creation_date.pdf
    • https://cdn.shopify.com/s/files/1/0449/9727/9908/files/arduino_microcontroller_processing_for_everyone_part_ii.pdf
    • https://cdn.shopify.com/s/files/1/0437/6831/6055/files/byzantine_art_history.pdf
    • https://cdn.shopify.com/s/files/1/0429/8083/5482/files/blue_circle_emoji.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_off0000485f.bin
d95bcac382e59e717666e399e00165d3a3fbe164810c4ae847fa54222ac7cb3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x485F 5496 bytes
font_01_sfnt_off00005b03.bin
5220916faebfabe7e80c62188fe23af166379a710a7ee84e9c9329f69ce06095		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B03 9288 bytes

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