Malicious PDF — malware analysis report

Static analysis result for SHA-256 596b2817e66caa9f…

MALICIOUS

PDF

40.7 KB Created: 2020-08-12 02:53:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 169383b1f33482d892c3e827fa701721 SHA-1: e1184bd27984f4390f653ee8a9479f0784945541 SHA-256: 596b2817e66caa9ff141e29925b0335ebd8e446d8deaa67f32c3b63c432cf073
152 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one critical heuristic firing indicating a link to known malicious redirector infrastructure. The document body and embedded links suggest a lure for downloading a 'PDF editor', which is a common social engineering tactic. The primary malicious URL identified is https://ttraff.com/wb?keyword=pdf%20editor%20for%20android%20phone%20free, which likely leads to further malicious content or malware download.

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/wb?keyword=pdf%20editor%20for%20android%20phone%20free
    • http://gumuro.leiawood.com/uploads/1/3/0/8/130814535/8d2262257.pdf
    • http://jeduku.historic-brookhaven.org/uploads/1/3/1/6/131606552/00454c97f.pdf
    • http://files.skwarczynskifilms.com/uploads/1/3/1/6/131606122/3713372.pdf
    • http://zodele.triathlonmalta.org/uploads/1/3/1/6/131606289/luxamigobu-bukibega-godalix-widowala.pdf
    • https://cdn.shopify.com/s/files/1/0428/6355/8815/files/tci_history_alive.pdf
    • https://cdn.shopify.com/s/files/1/0437/6064/8343/files/google_sheets_to.pdf
    • https://cdn.shopify.com/s/files/1/0443/1210/1020/files/animal_farm_york_notes.pdf
    • https://cdn.shopify.com/s/files/1/0434/0570/5374/files/the_cartoon_guide_to_calculus.pdf
    • https://cdn.shopify.com/s/files/1/0430/8451/3440/files/61882537676.pdf
    • https://cdn.shopify.com/s/files/1/0437/9095/8749/files/dukupegerulu.pdf
    • https://cdn.shopify.com/s/files/1/0434/7628/7645/files/aileron_reversal.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/94448736580.pdf
    • https://cdn.shopify.com/s/files/1/0430/6547/5229/files/lepuxatizejolov.pdf
    • https://cdn.shopify.com/s/files/1/0434/1219/3438/files/detaxorazaw.pdf
    • https://cdn.shopify.com/s/files/1/0429/9928/3861/files/66125362080.pdf
    • https://cdn.shopify.com/s/files/1/0448/4156/6370/files/que_es_balance_de_materia.pdf
    • https://cdn.shopify.com/s/files/1/0444/6588/1255/files/89657790130.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000061e9.bin
7a8a659b2a77e7016589f0134ee63974645ebaec5e6187e667ef24b64b4ca433		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61E9 4920 bytes
font_01_sfnt_off0000729b.bin
803799f50b1802076239f306e961e39ff6899c7512cca9f0a7a8e5f6cf96395e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x729B 10364 bytes

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