Malicious PDF — malware analysis report

Static analysis result for SHA-256 59880ef3cc983729…

MALICIOUS

PDF

50.6 KB Created: 2020-08-19 04:10:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f6a45077d0357f55f32f7b75c95d5ca2 SHA-1: bbfb6df78f0789a2f42d98b014b680102616f8fa SHA-256: 59880ef3cc98372973ed1e7f18de1ef66fa39756c8cb53093100d900fe33dae2
152 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing indicating a link to a known malicious redirector at 'ttraff.com'. The document body, though heavily obfuscated, contains a reference to the same redirector URL. This suggests the primary purpose is to redirect users to malicious infrastructure, likely for phishing or malware delivery.

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=ffxiv+armorsmith+leveling+guide
    • http://dumise.lyndajcox.com/uploads/1/3/0/7/130738542/4563874.pdf
    • http://files.driftset.net/uploads/1/3/1/4/131408117/laludumezeluxavatuf.pdf
    • http://files.ppisurrey.org/uploads/1/3/0/7/130739227/xogojakeki_siresurusabadam_bamowejow.pdf
    • https://cdn.shopify.com/s/files/1/0432/5425/1670/files/15649915187.pdf
    • https://cdn.shopify.com/s/files/1/0431/2875/0241/files/define_formalism_in_film.pdf
    • https://cdn.shopify.com/s/files/1/0428/7456/8860/files/apokryphe_evangelien.pdf
    • https://cdn.shopify.com/s/files/1/0428/5959/3894/files/1125508909.pdf
    • https://cdn.shopify.com/s/files/1/0436/3331/1904/files/jawupefozel.pdf
    • https://cdn.shopify.com/s/files/1/0431/3153/5522/files/kovilemovi.pdf
    • https://cdn.shopify.com/s/files/1/0443/4483/6252/files/dudotuvu.pdf
    • https://cdn.shopify.com/s/files/1/0427/9202/6271/files/7160087702.pdf
    • https://cdn.shopify.com/s/files/1/0435/7767/1843/files/65798665395.pdf
    • https://cdn.shopify.com/s/files/1/0428/1224/4134/files/19662414331.pdf
    • https://cdn.shopify.com/s/files/1/0429/6212/4959/files/wuxome.pdf
    • https://cdn.shopify.com/s/files/1/0430/2936/4889/files/bimimisixa.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/
    • https://cdn.shopify.com/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000088fc.bin
b22159cddd7c8cf3b02facc6bbb625d870e6f1cc3ea9b23164853119c87f95cf
pdf-font-stream PDF embedded font (sfnt) at offset 0x88FC 5404 bytes
font_01_sfnt_off00009b40.bin
5b5a791ab136fd0e6d9bccb864eaa6de1b37313d1496f693e881b7a25c156613
pdf-font-stream PDF embedded font (sfnt) at offset 0x9B40 9968 bytes