Malicious PDF — malware analysis report

Static analysis result for SHA-256 adc43f304eaf425a…

MALICIOUS

PDF

44.9 KB Created: 2020-08-06 11:42:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 195623cf9c2dd0c77bf68052f69a19d9 SHA-1: d831e16e062bd27ad9d7503678fb13d775be4351 SHA-256: adc43f304eaf425ab2377914fd091019b45764c8992621d6d678a40c2ceed297
152 Risk Score

Malware Insights

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

This PDF document contains a mass of external links, many of which are SEO-optimized to appear as legitimate PDF downloads. The primary malicious link, https://ttraff.cc/pify?keyword=artificial+intelligence+and+the+future+of+work+pdf, is identified as a redirector to malicious infrastructure. The document body, though heavily obfuscated, contains references to this malicious URL and other Shopify-hosted PDFs, suggesting a lure to download 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.cc/pify?keyword=artificial+intelligence+and+the+future+of+work+pdf
    • http://files.laurainthelibrary.com/uploads/1/3/0/8/130814258/bumurorulujixevibo.pdf
    • http://xemuretos.swindonairporttransfers.co.uk/uploads/1/3/0/8/130813095/riraluvokiduxide.pdf
    • http://samolal.elizabethkilcoyne.net/uploads/1/3/1/4/131453574/nilizodefuroba.pdf
    • http://files.riverplacemissouri.com/uploads/1/3/0/7/130738748/e711f433e75b.pdf
    • https://cdn.shopify.com/s/files/1/0432/6755/5481/files/wewelijuw.pdf
    • https://cdn.shopify.com/s/files/1/0436/6719/4021/files/change_pxe_menu_timeout.pdf
    • https://cdn.shopify.com/s/files/1/0431/6761/3087/files/17816626253.pdf
    • https://cdn.shopify.com/s/files/1/0430/9067/3813/files/33268138451.pdf
    • https://cdn.shopify.com/s/files/1/0433/9476/0862/files/vurivonimonagino.pdf
    • https://cdn.shopify.com/s/files/1/0430/3300/2145/files/25488486863.pdf
    • https://cdn.shopify.com/s/files/1/0433/7664/0156/files/software_architecture_patterns.pdf
    • https://cdn.shopify.com/s/files/1/0429/9699/0105/files/80458520740.pdf
    • https://cdn.shopify.com/s/files/1/0435/2193/3466/files/71665519049.pdf
    • https://cdn.shopify.com/s/files/1/0431/2930/7296/files/pumefazaxavog.pdf
    • https://cdn.shopify.com/s/files/1/0430/3680/3233/files/76352642744.pdf
    • https://cdn.shopify.com/s/files/1/0439/0558/1211/files/55182496897.pdf
    • https://cdn.shopify.com/s/files/1/0431/8032/7070/files/jujalorusixalezajoris.pdf
    • https://cdn.shopify.com/s/files/1/0430/7006/2754/files/66166766468.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_off00006fd1.bin
6cd221f5036b4d9f9e7918f52f2c3fe0e5bfa75e48ebe03e420d5742b8a4a25f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FD1 5384 bytes
font_01_sfnt_off0000822c.bin
7981a1d06c4e0f0423c399be7ac03cb55444b1797fbdb781ecad457e677de12b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x822C 10564 bytes

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