Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d94cd4649012074…

MALICIOUS

PDF

43.0 KB Created: 2020-08-10 21:32:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 08bcef2a59a118ab34372dc6fffb358b SHA-1: c8168ce87568211a5a63f255a9982e233f143328 SHA-256: 0d94cd46490120740bcf5a49e8cadbeefd3e3852822fabf2b405ecaa38936f9b
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though obfuscated, contains text related to a 'stormtrooper helmet template' and a URL that appears to be part of a link farm designed to manipulate search engine results. The presence of a malicious redirector strongly suggests an attempt to lead the user to a malicious site for further exploitation.

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=first+order+stormtrooper+helmet+template+pdf
    • http://files.hillsboroupc.com/uploads/1/3/1/3/131383580/pujugekajovigafowox.pdf
    • http://files.holoholotourshawaii.com/uploads/1/3/2/6/132682125/97ccf9196.pdf
    • http://files.designrenovationsxpgc.com/uploads/1/3/1/1/131164236/gekopatokereteb_zejakogefix.pdf
    • http://files.restaurantatburdicks.com/uploads/1/3/1/8/131871850/dc639ec8fb.pdf
    • http://files.firstgradetweets.com/uploads/1/3/1/0/131070487/815682.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0434/4135/6950/files/91220775367.pdf
    • https://cdn.shopify.com/s/files/1/0427/9356/6364/files/aushadh_darshan.pdf
    • https://cdn.shopify.com/s/files/1/0430/0813/1233/files/types_of_parenting_styles.pdf
    • https://cdn.shopify.com/s/files/1/0438/3332/7776/files/saxoxanaduvelutava.pdf
    • https://cdn.shopify.com/s/files/1/0435/4726/3128/files/mobavepes.pdf
    • https://cdn.shopify.com/s/files/1/0441/0084/5720/files/debian_jessie_sources._list.pdf
    • https://cdn.shopify.com/s/files/1/0436/0624/5539/files/ninojawabobuzubafugimo.pdf
    • https://cdn.shopify.com/s/files/1/0427/8625/9100/files/vifaturule.pdf
    • https://cdn.shopify.com/s/files/1/0433/0101/1611/files/finupexefotoferujon.pdf
    • https://cdn.shopify.com/s/files/1/0433/1402/0505/files/alejandro_jodorowsky_o_caminho_do_tarot.pdf
    • https://cdn.shopify.com/s/files/1/0428/7237/3411/files/lelukokipazexodofapojak.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_off00005d55.bin
ac66ddecb1889e99694234647e4a1e19b6174440e696c9ee44c6cb9711419273		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D55 3312 bytes
font_01_sfnt_off00006936.bin
4f5cfa3686e9945dc95c6c3b7a6f888d39b88bb23a369a9dc3e96e185fd213d3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6936 5236 bytes
font_02_sfnt_off00007adf.bin
1fc4dbe0073ea5259fb47fa9c07a47ddf2cacf39eeacf90ec05e3301d7aff0ca		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7ADF 10420 bytes

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