Malicious PDF — malware analysis report

Static analysis result for SHA-256 09e3d20246d76f3d…

MALICIOUS

PDF

47.2 KB Created: 2020-08-24 08:19:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 91d3152eff526a078d8788f8f2eff44b SHA-1: ee7dedc852133a75321665755a8502c8017bf5d2 SHA-256: 09e3d20246d76f3d34074c3afc3cc7b8224e315cfb6f137b442287b4196bb758
154 Risk Score

Malware Insights

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

The PDF contains numerous links, with one specifically pointing to a known malicious redirector infrastructure. The document body and embedded link data suggest a lure related to 'play store paid apps hack apk', indicating a phishing or scam attempt. The presence of embedded links and the ML classifier's high confidence score support this assessment.

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=play+store+paid+apps+hack+apk
    • http://katugez.goodshepherdinoshkosh.com/uploads/1/3/0/7/130775490/nenamidudoroxa-fotamiwe-labipawis.pdf
    • http://files.computerscpr.com/uploads/1/3/2/7/132740860/xubujolodosetejokuv.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0430/9506/4733/files/98175657391.pdf
    • https://cdn.shopify.com/s/files/1/0437/6608/7838/files/kivis.pdf
    • https://cdn.shopify.com/s/files/1/0433/0127/3758/files/42289688884.pdf
    • https://cdn.shopify.com/s/files/1/0440/1908/9566/files/17714667380.pdf
    • https://cdn.shopify.com/s/files/1/0431/8206/3777/files/ligudovuribi.pdf
    • https://cdn.shopify.com/s/files/1/0432/8266/1526/files/339522980.pdf
    • https://cdn.shopify.com/s/files/1/0433/9197/5580/files/kualitas_sumber_daya_manusia_di_indonesia.pdf
    • https://cdn.shopify.com/s/files/1/0431/4942/6839/files/24035353947.pdf
    • https://cdn.shopify.com/s/files/1/0431/4346/3069/files/patowejiriwuwaf.pdf
    • https://cdn.shopify.com/s/files/1/0431/4536/3610/files/fogaxos.pdf
    • https://cdn.shopify.com/s/files/1/0431/2553/8965/files/3gp_mobile_movies_free_download_hollywood.pdf
    • https://cdn.shopify.com/s/files/1/0434/0816/2981/files/datewagigimososemige.pdf
    • https://cdn.shopify.com/s/files/1/0437/0015/8629/files/capacitor_formula.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_off00006cc9.bin
4ac86e60e09038f9977e2eeb3963baca544a0eed8a3c8a227ce50082606d0204		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6CC9 5008 bytes
font_01_sfnt_off00007deb.bin
66ae34f45c839d65d1c908f5f46d288b62ebb2e1ed1c956b4e7a5466a7249169		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7DEB 10412 bytes
font_02_sfnt_off0000a193.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA193 4324 bytes

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