Malicious PDF — malware analysis report

Static analysis result for SHA-256 64ead5c2c09ef9c7…

MALICIOUS

PDF

53.1 KB Created: 2020-07-31 05:04:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1e25867f15cd3a4eebdec4be201edb74 SHA-1: f018c2a009aa7a7d9d95e28b768c47482ad933a1 SHA-256: 64ead5c2c09ef9c74e7a02814afec74ca9d2d5623b753a5c02feaf01bcdeb4e3
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 of which point to external PDF files, suggesting a link farm or SEO manipulation tactic. One critical heuristic identified a link to known malicious redirector infrastructure at 'https://ttraff.com/pify?keyword=bootstrap+3+tutorial+w3schools+pdf'. The ML classifier also strongly indicated maliciousness. While no scripts were extracted, the presence of numerous links and the redirector URL strongly suggest an intent to lead users to malicious 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=bootstrap+3+tutorial+w3schools+pdf
    • http://files.studioplumpiano.com/uploads/1/3/1/3/131383497/70178f76b.pdf
    • http://files.clearhealing.co.uk/uploads/1/3/1/4/131437074/ed7d19.pdf
    • http://files.plaincommunitychurch.com/uploads/1/3/1/3/131380005/jubob_pufadozilexida.pdf
    • http://files.mdihslibrary.net/uploads/1/3/1/4/131483153/92772b2f9aa.pdf
    • http://files.troypreschool.net/uploads/1/3/0/7/130738779/nagoxojetutapewuk.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/20424522606.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jotinu.pdf
    • https://cdn.shopify.com/s/files/1/0432/2010/7424/files/76121729408.pdf
    • https://cdn.shopify.com/s/files/1/0439/7786/7422/files/86077876720.pdf
    • https://cdn.shopify.com/s/files/1/0436/2174/4803/files/jibexabozijoruze.pdf
    • https://cdn.shopify.com/s/files/1/0429/2024/7462/files/lekebikop.pdf
    • https://cdn.shopify.com/s/files/1/0429/3584/5017/files/51532167451.pdf
    • https://cdn.shopify.com/s/files/1/0431/3546/7669/files/3916152845.pdf
    • https://cdn.shopify.com/s/files/1/0437/3685/8776/files/gakabi.pdf
    • https://cdn.shopify.com/s/files/1/0432/6385/2708/files/rebirosujapowid.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sezam.pdf
    • https://cdn.shopify.com/s/files/1/0429/1959/2099/files/dujuwenijura.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006e74.bin
e072799b31ed766b9f90489262f3e65aececffa69b65895d8d164fce93b624d9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E74 5208 bytes
font_01_sfnt_off0000804c.bin
eba741b6958d0e4be9b657842f1c2534a102220aa267ef192d60db1b5de532e0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x804C 15360 bytes
font_02_sfnt_off0000aff7.bin
c497e7020956884876526f9a9d0138e4369f5c46b3391b62f16f330352c2bc8d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAFF7 16076 bytes

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