Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e1e11da882580d5…

MALICIOUS

PDF

54.4 KB Created: 2020-07-29 02:15:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2ba2f5b93816e4854e601906f474bfa3 SHA-1: 0d4b29486109ef1b726a3214896a418b2ec709e3 SHA-256: 9e1e11da882580d559e9c0fa20e06805b9efc31d9f1dc24100782c55c96596e9
154 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link that is designed to lure users into clicking on it by presenting a seemingly innocuous topic. The link ultimately leads to malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The PDF also functions as a link farm, with numerous external links, many hosted on Shopify, likely for SEO manipulation to increase visibility.

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/pify?keyword=cartoon+network+tv+shows+in+tamil
    • http://files.omargr.com/uploads/1/3/1/4/131437733/5c66ef648006a45.pdf
    • http://files.carynsbeautysolutions.com/uploads/1/3/1/3/131379296/ziriwetedobota.pdf
    • http://files.eclecticcolour.com/uploads/1/3/0/7/130775892/9623960.pdf
    • https://cdn.shopify.com/s/files/1/0432/4681/3346/files/71767731124.pdf
    • https://cdn.shopify.com/s/files/1/0431/8982/9800/files/19314598379.pdf
    • https://cdn.shopify.com/s/files/1/0430/7173/3917/files/jagat.pdf
    • https://cdn.shopify.com/s/files/1/0431/5276/9192/files/jafesugekoz.pdf
    • https://cdn.shopify.com/s/files/1/0433/5943/6951/files/xodawujazowani.pdf
    • https://cdn.shopify.com/s/files/1/0430/8520/1561/files/saxelosigogexunuzom.pdf
    • https://cdn.shopify.com/s/files/1/0430/2936/4889/files/dawaxibikogixibaluv.pdf
    • https://cdn.shopify.com/s/files/1/0432/7027/5236/files/63512497561.pdf
    • https://cdn.shopify.com/s/files/1/0430/0849/1673/files/bebogutaz.pdf
    • https://cdn.shopify.com/s/files/1/0435/2340/8036/files/89441280169.pdf
    • https://cdn.shopify.com/s/files/1/0429/6497/5765/files/53176691905.pdf
    • https://cdn.shopify.com/s/files/1/0428/3629/5836/files/xuzidunudojiguzazeboped.pdf
    • https://cdn.shopify.com/s/files/1/0435/5702/7992/files/tujupidepaduvefitiwaz.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_off00009542.bin
b656cae9a582df375309e6740ffa56ffa68f9758e55dd894b1d4f98f8cb7db17
pdf-font-stream PDF embedded font (sfnt) at offset 0x9542 4952 bytes
font_01_sfnt_off0000a5fc.bin
dda90ae1f61b0f541b97f77ad45d655a6efd1302f12bccf11f96283d82b21aa5
pdf-font-stream PDF embedded font (sfnt) at offset 0xA5FC 11816 bytes