Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe68cec879d6254b…

MALICIOUS

PDF

57.4 KB Created: 2020-08-06 11:29:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 286db2076908d2c7b54bdcd0c1434d3e SHA-1: 97d7ff62dc99e22b3a101c4d3bb0fedab50c3331 SHA-256: fe68cec879d6254b83540e0dc0623678ea5432dcfbd07e1b1a76cc2b53790827
154 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, specifically pointing to 'https://ttraff.cc/pify?keyword=ciaphas+cain+death+or+glory+pdf'. This indicates the document's primary purpose is to redirect users to malicious infrastructure. The presence of numerous other PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to distribute the malicious PDF. 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.cc/pify?keyword=ciaphas+cain+death+or+glory+pdf
    • http://files.leakedesigns.com/uploads/1/3/1/6/131606346/882182.pdf
    • http://files.moagabrielsson.com/uploads/1/3/1/3/131379183/repona.pdf
    • http://files.geneeskracht-van-natuur.nl/uploads/1/3/1/6/131637374/woxepuri.pdf
    • http://files.luxemenswearstl.com/uploads/1/3/1/4/131482976/vavewivunewoxekalu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/metegemekipezafekude.pdf
    • https://cdn.shopify.com/s/files/1/0432/9452/3552/files/fonipugorepepefo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/54183348773.pdf
    • https://cdn.shopify.com/s/files/1/0431/2111/5298/files/ziriturojosorim.pdf
    • https://cdn.shopify.com/s/files/1/0440/9245/7112/files/bible_study_notebook.pdf
    • https://cdn.shopify.com/s/files/1/0432/4737/0402/files/jovatajejofifijojukupufal.pdf
    • https://cdn.shopify.com/s/files/1/0436/7246/9669/files/pivetazikusi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/29331550606.pdf
    • https://cdn.shopify.com/s/files/1/0428/1804/4063/files/viganib.pdf
    • https://cdn.shopify.com/s/files/1/0429/0222/5059/files/24222234797.pdf
    • https://cdn.shopify.com/s/files/1/0431/6522/1028/files/44433122238.pdf
    • https://cdn.shopify.com/s/files/1/0429/7677/2250/files/futukikeliviwowiborebov.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007b5a.bin
b21d1e64ccb7afc9a274a335bb1f31320d1edcac245065a703f7b7370076d092		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B5A 5328 bytes
font_01_sfnt_off00008d70.bin
c33a1b374bad807a3d9de3d3fc7ba0cc0b2f49b5628dd743d3840345214d4b5c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8D70 10552 bytes
font_02_sfnt_off0000b16d.bin
391e1de9f6bc7eae81880dad6edf2d41c6a1fcc2a77ea44b97fe3bad395cc475		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB16D 17200 bytes
font_03_sfnt_off0000c9ee.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC9EE 4324 bytes

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