Malicious PDF — malware analysis report

Static analysis result for SHA-256 999adb1836d3e392…

MALICIOUS

PDF

40.5 KB Created: 2020-07-13 04:10:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cfd167f5f54c79bc62ffda431ebd2d0a SHA-1: e4df9c77d92cc0eeec83fb25ed39a276f755d526 SHA-256: 999adb1836d3e392b7322168e32180c0c497449c257ee1759fb50811c493e278
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a link to a known malicious redirector, ttraff.com, which is likely used to funnel victims to malicious sites. The document body, though heavily obfuscated, appears to be related to a 'price guide', suggesting a lure to entice users to click the malicious link. The presence of numerous other PDF links further indicates a link farm designed for SEO poisoning or mass distribution.

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=ppg+funko+pop+price+guide
    • http://files.tonymartinwasinnocent.com/uploads/1/3/1/8/131856052/c08399.pdf
    • http://files.anacostiagrows.org/uploads/1/3/1/1/131164081/5873327.pdf
    • http://files.caroline-gibbs.com/uploads/1/3/0/7/130776008/883614.pdf
    • http://files.ljcosmetics.com/uploads/1/3/1/6/131607522/namusix-naxekopawasudow-pemebisakolino.pdf
    • https://kaxojore.files.wor
    • https://kuzulod.files.wordpress.com/2020/06/mupurewesawotimukofowo.pdf
    • https://kerivenulod.files.wordpress.com/2020/06/20923234594.pdf
    • https://wekogutew.files.wordpress.com/2020/07/detekabokowogi.pdf
    • https://pifajatomib.files.wordpress.com/2020/07/xoxuweweraba.pdf
    • https://kaxojore.files.wordpress.com/2020/06/2553030647.pdf
    • https://lubokafokazi.files.wordpress.com/2020/06/96810310318.pdf
    • https://gowunexinelo.files.wordpress.com/2020/06/finir.pdf
    • https://rojapasu.files.wordpress.com/2020/07/34146273982.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/niwaragevutaxesidep.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/marifurozijuzaledenikegi.pdf
    • https://cdn.shopify.com/s/files/1/0429/5832/3865/files/65952103649.pdf
    • https://cdn.shopify.com/s/files/1/0432/6984/9246/files/74117632189.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/depusulolunifanilux.pdf
    • https://cdn.shopify.com/s/files/1/0433/3862/9288/files/zuduluv.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nisej.pdf
    • https://cdn.shopify.com/s/files/1/0429/8863/4263/files/rorebageno.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000619d.bin
189eb271a8d7b95920e6cad118bd8e749e11bd100375f5ca20bb56579dca5e52		 pdf-font-stream PDF embedded font (sfnt) at offset 0x619D 4768 bytes
font_01_sfnt_off000071d9.bin
b6c7959cb1fd84e93a7ccb43f04f0702e2f3233b609aa6c044ab0059c35137a5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71D9 10176 bytes

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