Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b317217a443539f…

MALICIOUS

PDF

48.9 KB Created: 2020-08-12 16:33:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a86ab1f30325ea991e9890dfa9a43370 SHA-1: 16b6427e283f8d3600c08477acc9ed2c904e1803 SHA-256: 0b317217a443539ff19ba67642727f796355df09e09a9e9e9cb8064fbffbf6ef
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector, which is likely intended to lead the user to a malicious site. The document body and embedded links suggest a lure related to business templates, likely a phishing attempt to redirect users to malicious content. The ML classifier also strongly indicated 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=value+proposition+canvas+pdf+template
    • http://files.runjprun.com/uploads/1/3/2/7/132740511/b753c70d07ea.pdf
    • http://files.bryankisby.com/uploads/1/3/0/7/130776775/penivodofe_menonenugebilo_jusukitomowis_gexasijabusa.pdf
    • http://files.ecct1868.org/uploads/1/3/0/7/130738919/zorogif-tumixik.pdf
    • http://files.inspiredturquoisetack.com/uploads/1/3/2/7/132740905/7959619.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0431/0509/1745/files/widobirar.pdf
    • https://cdn.shopify.com/s/files/1/0431/0820/4704/files/86853344788.pdf
    • https://cdn.shopify.com/s/files/1/0431/8016/3232/files/96678772672.pdf
    • https://cdn.shopify.com/s/files/1/0428/8220/3801/files/bahriye_ok_emeviler_abbasiler.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/51982080438.pdf
    • https://cdn.shopify.com/s/files/1/0432/7433/8472/files/88973394529.pdf
    • https://cdn.shopify.com/s/files/1/0437/0785/9096/files/jumemakeliz.pdf
    • https://cdn.shopify.com/s/files/1/0444/3108/1639/files/shure_ulxp4_manual.pdf
    • https://cdn.shopify.com/s/files/1/0433/0458/3318/files/2573867780.pdf
    • https://cdn.shopify.com/s/files/1/0449/2935/1835/files/highly_composite_numbers_list.pdf
    • https://cdn.shopify.com/s/files/1/0433/9928/2845/files/gijigufot.pdf
    • https://cdn.shopify.com/s/files/1/0431/4916/4693/files/mowuzedumo.pdf
    • https://cdn.shopify.com/s/files/1/0427/9736/7452/files/3d_consortium.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_off0000747c.bin
e19c39d28e6731a72a3799e1f2203ae521c90ad4874fad708acb749ff1136305		 pdf-font-stream PDF embedded font (sfnt) at offset 0x747C 5208 bytes
font_01_sfnt_off0000861f.bin
c224b7daae22130ea0e48ce4ed9c449218599475f0c8951ee7feb4ade2dd1959		 pdf-font-stream PDF embedded font (sfnt) at offset 0x861F 10132 bytes
font_02_sfnt_off0000a8a8.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA8A8 4324 bytes

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