Malicious PDF — malware analysis report

Static analysis result for SHA-256 094d21d4c32ed4fb…

MALICIOUS

PDF

48.6 KB Created: 2020-08-01 13:06:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: af833d7dae2db641ad7a5beb1f3f65a0 SHA-1: dd90d3daa5f70d588d0d3692806c99aa338424e9 SHA-256: 094d21d4c32ed4fb89a08b42fc838878497e2557a207529d40e4b12fb6bfd769
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of embedded links, with one specifically pointing to a known malicious redirector. The document body text, though partially garbled, includes 'Dmv form mv- 104', suggesting a lure to trick users into clicking these links. The presence of numerous external PDF links, many hosted on Shopify, indicates a link farm designed to obscure the true malicious destination.

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=dmv+form+mv-+104
    • http://files.pinvestgroup.com/uploads/1/3/1/6/131637402/d35c3a36.pdf
    • http://files.capecoralchamber.com/uploads/1/3/1/0/131070604/fujoxonidujoz_semidetiwo_gepafaredore.pdf
    • http://files.abogadospluralistas.org/uploads/1/3/1/6/131606739/e8b66fac8.pdf
    • http://files.coloradojuniorcup.com/uploads/1/3/0/7/130776602/vovibokamirirev.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/2511/2988/files/34221397317.pdf
    • https://cdn.shopify.com/s/files/1/0440/7210/8197/files/ludiporolezakurujekile.pdf
    • https://cdn.shopify.com/s/files/1/0439/7367/3118/files/nejeno.pdf
    • https://cdn.shopify.com/s/files/1/0428/1712/6563/files/wexomajenanumuzimedenax.pdf
    • https://cdn.shopify.com/s/files/1/0431/2681/6932/files/32983383005.pdf
    • https://cdn.shopify.com/s/files/1/0435/3510/6203/files/forenuwumuduwise.pdf
    • https://cdn.shopify.com/s/files/1/0433/8502/8758/files/wuzenunupujozuxefolopedef.pdf
    • https://cdn.shopify.com/s/files/1/0438/0000/2717/files/2238306334.pdf
    • https://cdn.shopify.com/s/files/1/0435/8553/6159/files/najefivowibataranowan.pdf
    • https://cdn.shopify.com/s/files/1/0431/0263/4148/files/javesomira.pdf
    • https://cdn.shopify.com/s/files/1/0434/0885/1098/files/18419190915.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006ba0.bin
65404af5299a5405994aeb2ebc9c7622a309b43c873432f9abfa66ee5870f8d0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BA0 4868 bytes
font_01_sfnt_off00007c33.bin
e6288a8b3c5ceab98dbfeb43f9498ec0cd1af6bc72dea1fb7e7969938b35b09f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C33 2048 bytes
font_02_sfnt_off0000851a.bin
5485e7a38a6f443e93f32c1366d0aad48b204d42aff883640a6cbbcc154edf3c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x851A 15196 bytes

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