Malicious PDF — malware analysis report

Static analysis result for SHA-256 098d14ee7a36242c…

MALICIOUS

PDF

50.8 KB Created: 2020-08-04 14:02:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1e2ce6ad9a3c7efdec884d731adc9757 SHA-1: e1ed2fe91ed60f1b7eae2014ff8cde97962d6b48 SHA-256: 098d14ee7a36242c2021871845ce822ca91888e90ab8cc51adeebe1675209b17
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded links, with one identified as a malicious redirector pointing to 'https://ttraff.com/pify?keyword=knowing+the+living+god+pdf'. The ML classifier strongly flagged this PDF as malicious, and the presence of numerous external links suggests a link farm or SEO poisoning attempt. While no scripts were explicitly extracted, the PDF structure and embedded URLs indicate a malicious intent to lure users to external, potentially harmful, content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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=knowing+the+living+god+pdf
    • http://files.agapeministry.org/uploads/1/3/0/8/130874655/maxoxi-zibaxokeje-rolapuf.pdf
    • http://files.gabbyhayes.net/uploads/1/3/1/4/131407552/cc6838cf.pdf
    • http://files.kidseventtickets.com/uploads/1/3/0/9/130969509/rolegaweriwogi.pdf
    • http://files.jayibold.com/uploads/1/3/1/4/131406390/lujowogafe.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://fedorahosted.org/lohit
    • https://cdn.shopify.com/s/files/1/0441/2129/2952/files/jungle_stalker_vanilla.pdf
    • https://cdn.shopify.com/s/files/1/0430/0675/4970/files/1239331347.pdf
    • https://cdn.shopify.com/s/files/1/0427/7154/6279/files/37488144587.pdf
    • https://cdn.shopify.com/s/files/1/0428/1732/3175/files/48796928547.pdf
    • https://cdn.shopify.com/s/files/1/0429/2401/5783/files/wonagobagaxofagip.pdf
    • https://cdn.shopify.com/s/files/1/0430/8205/5842/files/munemu.pdf
    • https://cdn.shopify.com/s/files/1/0432/0549/2904/files/duwusurenawetadosoki.pdf
    • https://cdn.shopify.com/s/files/1/0440/2823/1830/files/biological_science_scott_freeman.pdf
    • https://cdn.shopify.com/s/files/1/0427/7082/5382/files/paw_print_columbia.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://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License
    • http://scripts.sil.org/OFL

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off000086b7.bin
3bdbabb2d0bfa7127c17f193e1e7ddffbfd296e3a6011b07c7159cb0c448a3f8		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x86B7 17996 bytes
font_00_sfnt_off000054f9.bin
14baa352ad1642b8566195ceb87b2bf7effdf3f2bfe204665d6ff3ea7c2aab33		 pdf-font-stream PDF embedded font (sfnt) at offset 0x54F9 4728 bytes
font_01_sfnt_off0000652f.bin
6626c37dd3f7af817b3ec5742fe56d7b8894ff60aa599e17f8e3bb7dc6b44cc1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x652F 9732 bytes
font_03_sfnt_off0000a2a1.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA2A1 4324 bytes
font_04_sfnt_off0000b0a1.bin
ee8afa51e50492bdf4d25b6b01818d2021856a0eb5271b70f188e6d094f25891		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB0A1 2832 bytes

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