Malicious PDF — malware analysis report

Static analysis result for SHA-256 080960899759a766…

MALICIOUS

PDF

43.6 KB Created: 2020-08-07 19:10:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ab5db9a82c9579efb808763803ac6fc7 SHA-1: 5d7b213d43dcbdbd815fc8aa361d19a38153791b SHA-256: 080960899759a766db3bafe1d53085c01f67af587e73a5cb6cbfa689315668ca
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external resources, including a known malicious redirector at 'ttraff.com'. The document body, though heavily obfuscated, appears to contain the same lure text and URLs as the embedded links, suggesting a phishing or SEO spam campaign. The ML classifier strongly indicated maliciousness, supporting the presence of malicious redirectors.

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.com/pify?keyword=bank+exam+gk+questions+and+answers+pdf
    • http://nalikaw.mcgraththerapy.com/uploads/1/3/0/7/130776445/1065719.pdf
    • http://files.charlotteandcompany.net/uploads/1/3/1/4/131408798/6d4882969ae0cf.pdf
    • http://files.rogersmechanicalinc.com/uploads/1/3/0/7/130739898/xifakazates_zulefik.pdf
    • http://files.reddooracupuncture.com/uploads/1/3/1/0/131070485/f619f1df8d03b.pdf
    • http://files.islandbeautyportland.com/uploads/1/3/0/9/130969243/522dd448b29a.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0440/4799/0934/files/nekizinakegoduz.pdf
    • https://cdn.shopify.com/s/files/1/0432/6175/5560/files/1476730462.pdf
    • https://cdn.shopify.com/s/files/1/0431/3910/4917/files/turbulance_fd_mac_craxck.pdf
    • https://cdn.shopify.com/s/files/1/0431/7180/7394/files/example_statement_of_purpose.pdf
    • https://cdn.shopify.com/s/files/1/0438/6521/1035/files/folazisogezomolipofifuno.pdf
    • https://cdn.shopify.com/s/files/1/0434/3411/5233/files/pifukapomalezalatexupise.pdf
    • https://cdn.shopify.com/s/files/1/0429/2204/9695/files/peruzibozafejufodabex.pdf
    • https://cdn.shopify.com/s/files/1/0432/2754/5755/files/jewoxisekiseluparezu.pdf
    • https://cdn.shopify.com/s/files/1/0435/1826/3464/files/15177672668.pdf
    • https://cdn.shopify.com/s/files/1/0435/2416/1695/files/92510580422.pdf
    • https://cdn.shopify.com/s/files/1/0433/6631/8230/files/20763154238.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006a0b.bin
49e87b55f68663c3eb51ce95b596eca02a87f33297a9038e9dc79063383eaa7f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A0B 5728 bytes
font_01_sfnt_off00007d8f.bin
17f4fbb14d9cd4f905363b449f52785f615bdef130804396036f07826745b889		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D8F 10600 bytes

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