Malicious PDF — malware analysis report

Static analysis result for SHA-256 6cfadd9511623b6c…

MALICIOUS

PDF

49.4 KB Created: 2020-07-30 19:59:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: edc8c88753f1cfa04701ee1810d28671 SHA-1: 806c5096a723ebfb8ecc0c9dcc364b8f97509f2c SHA-256: 6cfadd9511623b6c5ec55ad8e11659d9cd07b80c22a8734d1bf61eae1bf14c77
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, suggests a lure related to 'graphene oxide synthesis', likely to attract victims through search engines. The ML classifier strongly indicates maliciousness, and the presence of a malicious redirector confirms the intent to lead users to harmful content.

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=improved+synthesis+of+graphene+oxide+pdf
    • http://files.akashachamberlain.com/uploads/1/3/2/6/132682970/gavanolu_tutubamemeber.pdf
    • http://files.morandoopress.com/uploads/1/3/2/8/132814220/6664212.pdf
    • http://files.goytrewarmemorial.co.uk/uploads/1/3/1/1/131164431/04df0e07.pdf
    • http://files.voices4earth.org/uploads/1/3/0/8/130874566/tuzalalitod.pdf
    • http://files.hannesjacobsviolins.com/uploads/1/3/2/8/132814427/milesuxewafexi.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0432/2358/0830/files/74471930172.pdf
    • https://cdn.shopify.com/s/files/1/0433/7795/0870/files/wapakodejajorunukodeti.pdf
    • https://cdn.shopify.com/s/files/1/0430/7202/8823/files/37845155612.pdf
    • https://cdn.shopify.com/s/files/1/0434/4935/2349/files/nusodinirefazananad.pdf
    • https://cdn.shopify.com/s/files/1/0437/3915/2536/files/90574949806.pdf
    • https://cdn.shopify.com/s/files/1/0438/3142/7234/files/83981213640.pdf
    • https://cdn.shopify.com/s/files/1/0432/4861/5579/files/52574602715.pdf
    • https://cdn.shopify.com/s/files/1/0437/2883/0625/files/gexiwanekopogamomula.pdf
    • https://cdn.shopify.com/s/files/1/0431/2950/3901/files/pulonijoxogizitevifegi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vewurobafug.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/22945880436.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_off000082d2.bin
3d843992b2755f7dc0d2587e488150a6ddfaf29dc145aa1f83cb8ccbe5028791		 pdf-font-stream PDF embedded font (sfnt) at offset 0x82D2 5380 bytes
font_01_sfnt_off000094f5.bin
193505925fab330ce2316daf0c39d030a1c6b47b09baccf06cf8f9e7327bb2bb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x94F5 10644 bytes

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