Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ea23eb8940fa540…

MALICIOUS

PDF

42.6 KB Created: 2020-08-24 22:13:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1916d5bbc8327164e41d28ca5f1f559c SHA-1: af7039db2253cc94b52e5e977d7a04750894ea39 SHA-256: 5ea23eb8940fa54069fb400e59313807cedf86f817c243e0e04d3f33c153a8b6
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one identified as a malicious redirector. The ML classifier strongly indicated maliciousness, and the presence of a link farm suggests an attempt to manipulate search engine results or distribute malicious content. The document body contains garbled text but includes the malicious URL, indicating a likely lure to a malicious site.

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.cc/pify?keyword=hotspot+free+vpn+apkpure
    • http://files.glutenaciouslife.com/uploads/1/3/1/4/131438180/jibugazubasa_gedufutelesodo_pidawadexinomil_gijisakurujubuj.pdf
    • http://denigigel.donshireministries.org/uploads/1/3/0/9/130969368/8751141.pdf
    • http://wupiz.concoursllc.us/uploads/1/3/0/8/130874012/4401781.pdf
    • http://lorub.bodyandsolbronzing.com/uploads/1/3/0/7/130739873/dc1f24f6.pdf
    • http://kevitap.susansimons.com/uploads/1/3/0/9/130969077/ganejizivewesi.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0436/4576/3744/files/mupom.pdf
    • https://cdn.shopify.com/s/files/1/0430/5482/5621/files/43598236774.pdf
    • https://cdn.shopify.com/s/files/1/0429/7513/3859/files/bexafapekuxokezeloviteref.pdf
    • https://cdn.shopify.com/s/files/1/0432/6385/2712/files/90335927737.pdf
    • https://cdn.shopify.com/s/files/1/0431/5519/4011/files/30531319742.pdf
    • https://cdn.shopify.com/s/files/1/0430/3709/8133/files/45557263164.pdf
    • https://cdn.shopify.com/s/files/1/0432/0254/3778/files/luxury_brand_marketing_strategy.pdf
    • https://cdn.shopify.com/s/files/1/0435/8658/4733/files/39796838443.pdf
    • https://cdn.shopify.com/s/files/1/0431/6617/1296/files/lagu_racun_asmara_cover_tiya.pdf
    • https://cdn.shopify.com/s/files/1/0430/4257/0402/files/minecraft_galacticraft_mod.pdf
    • https://cdn.shopify.com/s/files/1/0433/0799/1195/files/84989046275.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/riginijulu.pdf
    • https://cdn.shopify.com/s/files/1/0439/4788/4699/files/vimogoz.pdf
    • https://cdn.shopify.com/s/files/1/0428/3708/2271/files/44838526571.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000068b5.bin
6740262c7ae623b95d9d852d060f42bdbf2d2dc82bb4231361dd9e95e6d4f81a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x68B5 4948 bytes
font_01_sfnt_off000079a1.bin
79dc158edfb5a9f6ada1e73233a25b836712b2fea676688e49398828a60cd17e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x79A1 10568 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.