Malicious PDF — malware analysis report

Static analysis result for SHA-256 8dd3505470b383e7…

MALICIOUS

PDF

50.6 KB Created: 2020-08-12 04:01:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0c226eafbe06866deb734ba4d62398da SHA-1: 8f6808a473454270cc837e083131f87d80b13bec SHA-256: 8dd3505470b383e72fd22961fafbd3b8adda153560eac362a3efbedcfcca8965
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 malicious redirector. The document body, though malformed, suggests a lure for 'free bodybuilding programs pdf'. The primary malicious URL identified is https://ttraff.cc/pify?keyword=free+bodybuilding+programs+pdf, which likely serves as a gateway to further malicious content. The presence of a link farm and the ML classifier's high confidence score further support the malicious classification.

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.cc/pify?keyword=free+bodybuilding+programs+pdf
    • http://mawidabe.themagicalphotographer.com/uploads/1/3/0/7/130738993/5dc46e.pdf
    • http://bewiwo.loomjewellery.com/uploads/1/3/0/7/130775818/ad903c8e25b.pdf
    • http://files.aitchfoundation.com/uploads/1/3/0/7/130776451/1e372395.pdf
    • https://cdn.shopify.com/s/files/1/0427/9504/0924/files/98192114245.pdf
    • https://cdn.shopify.com/s/files/1/0434/2287/5797/files/xorumuk.pdf
    • https://cdn.shopify.com/s/files/1/0432/7243/7913/files/48461605530.pdf
    • https://cdn.shopify.com/s/files/1/0443/1210/1020/files/extrusion_of_aluminium_alloys_sheppard.pdf
    • https://cdn.shopify.com/s/files/1/0440/6778/2808/files/advertising_vocabulary_quiz.pdf
    • https://cdn.shopify.com/s/files/1/0433/6353/2951/files/webaliwidesozinotipiwe.pdf
    • https://cdn.shopify.com/s/files/1/0433/3119/0952/files/business_management_definition.pdf
    • https://cdn.shopify.com/s/files/1/0440/8747/6389/files/56549672689.pdf
    • https://cdn.shopify.com/s/files/1/0428/0333/1231/files/que_es_el_aprendizaje_visual.pdf
    • https://cdn.shopify.com/s/files/1/0437/6464/6037/files/95988158213.pdf
    • https://cdn.shopify.com/s/files/1/0430/3729/4754/files/pexawisa.pdf
    • https://cdn.shopify.com/s/files/1/0429/9977/5381/files/leraxekemikumesub.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kefemomorevogik.pdf
    • https://cdn.shopify.com/s/files/1/0432/0657/4238/files/madererinoga.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_off000087d8.bin
ae33e8f8def0208a75cc5afb254634afbe23d427b272948ece427b21d4216189		 pdf-font-stream PDF embedded font (sfnt) at offset 0x87D8 5556 bytes
font_01_sfnt_off00009aa9.bin
040144a3ece49227072065213296c511b793121708c2cae2cf4751cb6ae616e9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9AA9 10268 bytes

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