Malicious PDF — malware analysis report

Static analysis result for SHA-256 b00f6ff21562d05c…

MALICIOUS

PDF

43.5 KB Created: 2020-08-29 16:39:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fa9e874fa37b0dd73530be0d5024a7e6 SHA-1: a9fe3d910eca83b5980851f918ffb8684ec84265 SHA-256: b00f6ff21562d05cce2dfb1b64f3eaa03349bf321686f7ee0c65d2c92b63f91b
152 Risk Score

Malware Insights

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

The PDF contains a link farm pointing to numerous PDF files hosted on Shopify and other domains, with a primary redirector URL identified as malicious. The document body, though obfuscated, contains keywords related to 'Maytag self cleaning oven add water' and the malicious redirector URL, suggesting a lure for a phishing or scam campaign. The presence of a malicious redirector and a large number of external links indicates an attempt to drive traffic to potentially harmful 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.me/wix?keyword=maytag+self+cleaning+oven+add+water
    • https://cdn.shopify.com/s/files/1/0431/5345/7320/files/vanadirabonazaxafikula.pdf
    • https://cdn.shopify.com/s/files/1/0431/0119/2352/files/43566980188.pdf
    • https://cdn.shopify.com/s/files/1/0437/5783/0298/files/wejopugaxikuburut.pdf
    • https://cdn.shopify.com/s/files/1/0427/6633/6167/files/mopuperepafasunofuwe.pdf
    • https://cdn.shopify.com/s/files/1/0463/6085/4683/files/zirupodinowubogaxonelegin.pdf
    • https://static.usrfiles.com/ugd/18f527_e454e92f630549569f1300ad52eeb1f6.pdf
    • https://static.usrfiles.com/ugd/b8c837_697aaf178e0b4b4287b4993b826fa0c9.pdf
    • https://static.usrfiles.com/ugd/b8c837_470e11c826a442f0ab865352db2ba501.pdf
    • https://static.usrfiles.com/ugd/b8c837_1858676660804e6b885624829c01250d.pdf
    • https://static.usrfiles.com/ugd/3f0e57_3a075136fac6410c96fa92ca6e2d92ae.pdf
    • https://cdn.shopify.com/s/files/1/0435/8871/4653/files/icy_veins_holy_paladin.pdf
    • https://cdn.shopify.com/s/files/1/0434/8860/8418/files/los_artrpodos.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005c59.bin
abe0b4c4e1cb84f5094ad9c3792ed29fc393253de6b43febf16fbab633ed558c
pdf-font-stream PDF embedded font (sfnt) at offset 0x5C59 5236 bytes
font_01_sfnt_off00006e51.bin
2d15fa654c78f40562f5520c2aae6082562317c5042658a7892da032ba8b922f
pdf-font-stream PDF embedded font (sfnt) at offset 0x6E51 10992 bytes
font_02_sfnt_off0000935c.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378
pdf-font-stream PDF embedded font (sfnt) at offset 0x935C 4324 bytes