Malicious PDF — malware analysis report

Static analysis result for SHA-256 c734a2f43bd88d65…

MALICIOUS

PDF

40.3 KB Created: 2020-08-05 22:43:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d3b032f9decaabeee6e670cc78b7d8eb SHA-1: 90f7316fedc059af91d2838516950ac88bde519b SHA-256: c734a2f43bd88d6549fc2a3ff18087a7d3b0aba1fa5f1c12f249c046f322bba3
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is likely used to obscure the final destination. The document body, though partially corrupted, suggests a lure related to educational content, specifically 'Amoeba sisters video recap ecological succession answers pdf'. This indicates a phishing or scam attempt designed to trick users into visiting malicious infrastructure.

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=amoeba+sisters+video+recap+ecological+succession+answers+pdf
    • http://files.divinemermaid.com/uploads/1/3/1/4/131406182/xedewibasovak.pdf
    • http://files.quiet-mind.co.uk/uploads/1/3/1/3/131379296/maked.pdf
    • http://files.rmtzgarcia.com/uploads/1/3/0/7/130740149/1ab38417.pdf
    • http://files.tsubosalon.com/uploads/1/3/1/4/131412558/vesoniwenujoxa_luziripuperane_geseremo.pdf
    • http://files.bourgeondelavande.com/uploads/1/3/0/7/130738914/6959656.pdf
    • https://cdn.shopify.com/s/files/1/0435/9526/8264/files/kewejelugesesapoja.pdf
    • https://cdn.shopify.com/s/files/1/0435/2330/9727/files/78757669332.pdf
    • https://cdn.shopify.com/s/files/1/0435/6639/9647/files/wufuwineloxetatimaba.pdf
    • https://cdn.shopify.com/s/files/1/0431/1370/9722/files/59302438655.pdf
    • https://cdn.shopify.com/s/files/1/0431/5843/8056/files/arquitectura_renacentista_caracteristicas.pdf
    • https://cdn.shopify.com/s/files/1/0431/4251/2797/files/18066367457.pdf
    • https://cdn.shopify.com/s/files/1/0434/6534/3133/files/12932654598.pdf
    • https://cdn.shopify.com/s/files/1/0434/2117/1873/files/febiligeletolawapitod.pdf
    • https://cdn.shopify.com/s/files/1/0430/7753/3856/files/90261639854.pdf
    • https://cdn.shopify.com/s/files/1/0434/9234/3970/files/lifuripobexewujesowekimo.pdf
    • https://cdn.shopify.com/s/files/1/0435/2563/6248/files/panetezitoxawis.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005557.bin
8b69ad8bf8706a8de8604f0485c67fb25a23b24d50174afbb8bbf061f3c53837		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5557 1684 bytes
font_01_sfnt_off00005dbb.bin
f3eb06423bec4293991afeb643bdce98594b06c1c5a39a6091f657363ddbcfcb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5DBB 5756 bytes
font_02_sfnt_off00007153.bin
656654ea452251f5321ab9162d001122a9c0d766d2a47823a3973a7fb68e2bc9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7153 10020 bytes

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