Malicious PDF — malware analysis report

Static analysis result for SHA-256 0bcfc5a8e87f49fe…

MALICIOUS

PDF

43.7 KB Created: 2020-08-05 03:36:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2ca61ba15388289776e9fbbcb5578a1c SHA-1: 3f0d4aa28d4db5d9b8008e234f6f483bea74cd7c SHA-256: 0bcfc5a8e87f49fe4da8dba6fbf4db93541f8ec19e9ce363c5222f6d5f10286b
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector infrastructure, which is designed to lead users to further malicious content. The heuristic firings indicate that this PDF is part of a link farm, likely for SEO poisoning or to distribute malware. The ML classifier also strongly flagged this PDF as malicious.

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.ru/pify?keyword=articulaciones+del+hombro+pdf
    • http://files.dominionwineandbeerstore.com/uploads/1/3/1/6/131637148/cba3a481b.pdf
    • http://files.ngatipaoaiwi.co.nz/uploads/1/3/1/3/131380467/tedolajonur.pdf
    • http://files.conniesclassictouch.com/uploads/1/3/0/9/130969506/28589.pdf
    • http://files.lwemporium.com/uploads/1/3/1/4/131437283/2400889.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0437/8374/9781/files/stoger_condor_supreme.pdf
    • https://cdn.shopify.com/s/files/1/0431/1810/0637/files/84347829108.pdf
    • https://cdn.shopify.com/s/files/1/0438/4659/8816/files/54048821824.pdf
    • https://cdn.shopify.com/s/files/1/0427/6885/9303/files/72259071133.pdf
    • https://cdn.shopify.com/s/files/1/0429/0645/2131/files/home_bethel_chords.pdf
    • https://cdn.shopify.com/s/files/1/0432/2990/5058/files/antropologia_cultural.pdf
    • https://cdn.shopify.com/s/files/1/0435/8032/6051/files/22136738662.pdf
    • https://cdn.shopify.com/s/files/1/0430/4162/0119/files/tableau_priodique.pdf
    • https://cdn.shopify.com/s/files/1/0445/3515/2804/files/coca_cola_mission_statement.pdf
    • https://cdn.shopify.com/s/files/1/0433/9915/1768/files/jenusaw.pdf
    • https://cdn.shopify.com/s/files/1/0438/5079/3110/files/90633772701.pdf
    • https://cdn.shopify.com/s/files/1/0428/6421/4175/files/79356286110.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005da9.bin
e54610e953095984af13d5c357a997b4c342c13ae41589b3f1d7f0c0f39d592e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5DA9 5408 bytes
font_01_sfnt_off00006fcc.bin
bbaac3d5fc898fbab2ac3fc97456704258975aee450ecf68570a45a525bcc94b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FCC 10552 bytes
font_02_sfnt_off00009232.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9232 4324 bytes

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