Malicious PDF — malware analysis report

Static analysis result for SHA-256 4478fa05f2ed962d…

MALICIOUS

PDF

52.7 KB Created: 2020-08-04 05:22:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2f3b66f57320bde6987e3303ca9c2033 SHA-1: add62034dc4f468a6f3c9deb878bf0ecd439d77a SHA-256: 4478fa05f2ed962d131c4afded02768c9dbc12ae0dc776e51ace228e6b593945
152 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector at ttraff.com. The document body, though heavily obfuscated, appears to be a lure related to 'mekanisme hormon kortisol pdf'. The presence of a link farm and a critical redirector firing strongly suggests a phishing or malicious redirection attempt. No scripts were extracted, limiting the analysis of further execution chains.

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=mekanisme%20hormon%20kortisol%20pdf
    • http://files.californiamobilenotaryriverside.com/uploads/1/3/2/8/132815008/zekisab.pdf
    • http://lerajex.theepyawards.com/uploads/1/3/1/0/131071243/807df0.pdf
    • http://files.didonato-literature.com/uploads/1/3/0/7/130738741/9293368.pdf
    • http://files.barrystaxidermy.net/uploads/1/3/1/4/131452942/ditupa.pdf
    • https://cdn.shopify.com/s/files/1/0435/8704/3496/files/gused.pdf
    • https://cdn.shopify.com/s/files/1/0440/9350/5688/files/wookie_nookie_1975.pdf
    • https://cdn.shopify.com/s/files/1/0430/6662/2101/files/ropirogosez.pdf
    • https://cdn.shopify.com/s/files/1/0433/1808/3742/files/buvesutubuzelajufinaga.pdf
    • https://cdn.shopify.com/s/files/1/0433/6897/2444/files/38544221099.pdf
    • https://cdn.shopify.com/s/files/1/0431/6535/2093/files/where_to_find_googlechrome._dmg.pdf
    • https://cdn.shopify.com/s/files/1/0438/2290/7549/files/zilujosevok.pdf
    • https://cdn.shopify.com/s/files/1/0435/9254/8511/files/fesigubaminigovegujo.pdf
    • https://cdn.shopify.com/s/files/1/0432/0926/1218/files/reloniwinizarimadetoreji.pdf
    • https://cdn.shopify.com/s/files/1/0431/3923/5997/files/75826951708.pdf
    • https://cdn.shopify.com/s/files/1/0434/2474/3591/files/pygame_cheat_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0430/0832/7829/files/toruxor.pdf
    • https://cdn.shopify.com/s/files/1/0432/0791/7729/files/76967229772.pdf
    • https://cdn.shopify.com/s/files/1/0431/3628/6877/files/55192562777.pdf
    • https://cdn.shopify.com/s/files/1/0432/6345/9496/files/v_belt_cross_reference.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_off00008536.bin
f127061f5f7d3c9733069f9721c1f07c4341c3d4f7da236e9f3f75c4fa09057a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8536 5352 bytes
font_01_sfnt_off0000974a.bin
4f431d82d40c7781d8aab3efa4f021e884e1ce9e3c8ad5d54e4fe2748cfd7518		 pdf-font-stream PDF embedded font (sfnt) at offset 0x974A 14880 bytes

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