Malicious PDF — malware analysis report

Static analysis result for SHA-256 7fe9b348ddc84972…

MALICIOUS

PDF

46.9 KB Created: 2020-07-15 17:17:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f460790f8c72518413be5588f71b89f9 SHA-1: 22a9996a698331102ab25185d799c2d026b4839a SHA-256: 7fe9b348ddc84972b2f3872ca517e597f6693f6f6a85cc9b6dd03d2014faabb1
152 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, with one specifically identified as a redirector to malicious infrastructure. The ML classifier also strongly indicated maliciousness. The presence of a large number of external PDF links suggests a link farm or SEO poisoning attempt to drive traffic to potentially malicious content.

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/wb?keyword=7%20day%20vegetarian%20keto%20meal%20plan%20pdf
    • http://files.renaissancewomyncreations.com/uploads/1/3/1/4/131437743/3927088.pdf
    • http://files.lewestonshop.co.uk/uploads/1/3/1/4/131406303/tisaxelosidamus_pitalodo_jodedojaxumus_kafokitofi.pdf
    • http://files.isoandbusinessexpert.com/uploads/1/3/0/8/130813797/noxodak.pdf
    • http://files.bookhivebeerclub.com/uploads/1/3/0/9/130969910/f65beae6b726.pdf
    • http://files.xphotographymore.com/uploads/1/3/0/8/130874416/3682262.pdf
    • http://files.familyfellowshipla.com/uploads/1/3/0/9/130969194/nulaji-selozam.pdf
    • http://files.aubshealthysmartline.com/uploads/1/3/2/7/132740633/ca3f14.pdf
    • http://files.lewestonshop.co.uk/up
    • https://kanagop.files.wordpress.com/2020/07/70145131636.pdf
    • https://ruzakugefafa.files.wordpress.com/2020/06/78922529308.pdf
    • https://wuxegura685470280.files.wordpress.com/2020/07/33230690150.pdf
    • https://cdn.shopify.com/s/files/1/0427/9658/1020/files/87020523084.pdf
    • https://cdn.shopify.com/s/files/1/0430/6118/2617/files/rutolad.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/lewajoranuputefikilos.pdf
    • https://cdn.shopify.com/s/files/1/0429/1778/9863/files/sapadorapuwu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/20597849085.pdf
    • https://cdn.shopify.com/s/files/1/0429/9004/3285/files/59626840539.pdf
    • https://cdn.shopify.com/s/files/1/0430/0688/6051/files/jufimilabireso.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kuwuvovevikusezavufada.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_off00007959.bin
1e1d60fcfc4c501f2aee1d984aed1d0db76b1d59eaaeaad0352d2b8f2458ef13		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7959 5180 bytes
font_01_sfnt_off00008af2.bin
a3f139213e5610bc42a1c18d19ed921c2df91cf7638ec95ebc3819166ce08064		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8AF2 10252 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.