Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0b99eaec02b0cf9…

MALICIOUS

PDF

65.0 KB Created: 2020-08-22 06:52:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ed388c4148afc0223d039aaca50a3b05 SHA-1: ad14e3acc6b331db8618a51abe2d5632f13595a2 SHA-256: b0b99eaec02b0cf9c4d1787a30c5e24fd473cb44881738d4fc8e3f532c0084cf
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.ru, disguised as a 'Time Warner Cable TV guide'. The ML classifier strongly indicates maliciousness. The document body and embedded link suggest a phishing or scam attempt to redirect users to malicious infrastructure.

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.ru/pify?keyword=time+warner+cable+tv+guide+myrtle+beach
    • http://files.goldtouchhair.com/uploads/1/3/0/7/130739544/neboluzejuxoxa-xufubuvuxojita-zirumij.pdf
    • http://wixum.kuponyaarts.com/uploads/1/3/1/3/131379639/ribebakevokadawarese.pdf
    • https://cdn.shopify.com/s/files/1/0429/7365/9290/files/modawaxofukebu.pdf
    • https://cdn.shopify.com/s/files/1/0431/9238/5700/files/53578166780.pdf
    • https://cdn.shopify.com/s/files/1/0436/6221/3273/files/ceclor_bd_750.pdf
    • https://cdn.shopify.com/s/files/1/0432/8413/6086/files/lalato.pdf
    • https://cdn.shopify.com/s/files/1/0432/0028/2783/files/microsoft_project_2010_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/1373/3534/files/ajgar_ki_photo.pdf
    • https://cdn.shopify.com/s/files/1/0437/0202/6393/files/vunipunosason.pdf
    • https://cdn.shopify.com/s/files/1/0433/1631/4277/files/novituvosopusoregawa.pdf
    • https://cdn.shopify.com/s/files/1/0435/4804/9572/files/static_vs_dynamic_scoping.pdf
    • https://cdn.shopify.com/s/files/1/0434/1743/6312/files/nivopazumutovuzigamon.pdf
    • https://cdn.shopify.com/s/files/1/0441/3099/2280/files/gonozegekipolegen.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_off0000bde7.bin
0ae2f4700bef0b42a3e95ff545c9a7924c20a8a76aa0b82e934982903a6a9bc0
pdf-font-stream PDF embedded font (sfnt) at offset 0xBDE7 5520 bytes
font_01_sfnt_off0000d088.bin
f325fdb36628c7f07fbfcf3e600f789a05cf1476ed72de61c598ddfe3f8255bc
pdf-font-stream PDF embedded font (sfnt) at offset 0xD088 10760 bytes