Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a59ead5edfa2b29…

MALICIOUS

PDF

45.0 KB Created: 2020-08-23 15:54:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7602a26bbbcb84f9b71cf3432c918ee1 SHA-1: 772d33e9fb2b5765747245587d693138abac1931 SHA-256: 5a59ead5edfa2b299ad226601f31e9d85d7b11b72b9ec614734c78303f53b520
154 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to a known malicious domain, ttraff.com, which is flagged as a redirector. The document body, though partially corrupted, includes text related to 'Credit Suisse wealth report lebanon', suggesting a lure. The presence of numerous external PDF links, many hosted on Shopify, indicates a link farm designed to obscure the malicious destination.

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=credit+suisse+wealth+report+lebanon
    • http://files.naazneendiwan.com/uploads/1/3/0/7/130775309/lujutimasipij.pdf
    • http://xuzenup.runninsranch.com/uploads/1/3/1/4/131437626/wikerepoviravabik.pdf
    • http://favezonev.durbanafrica.co.za/uploads/1/3/1/8/131871991/9302233.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0436/1604/3168/files/fidovodixenosajotaximomud.pdf
    • https://cdn.shopify.com/s/files/1/0434/1504/4245/files/citrix_receiver_for_windows_free.pdf
    • https://cdn.shopify.com/s/files/1/0434/0065/9100/files/nuxitidojej.pdf
    • https://cdn.shopify.com/s/files/1/0430/2284/4067/files/19051455466.pdf
    • https://cdn.shopify.com/s/files/1/0431/0705/7825/files/xuxawosogulofetixibujogeg.pdf
    • https://cdn.shopify.com/s/files/1/0435/2675/0357/files/bhojpuri_gana_bhakti_song.pdf
    • https://cdn.shopify.com/s/files/1/0434/1609/2828/files/50660963770.pdf
    • https://cdn.shopify.com/s/files/1/0431/6351/7092/files/meweralakogabesiredaveme.pdf
    • https://cdn.shopify.com/s/files/1/0450/4325/3406/files/a_horse_and_two_goats_summary.pdf
    • https://cdn.shopify.com/s/files/1/0438/2598/7734/files/jolojukek.pdf
    • https://cdn.shopify.com/s/files/1/0433/7762/3194/files/25997831337.pdf
    • https://cdn.shopify.com/s/files/1/0436/9291/6886/files/south_park_fractured_but_whole_dlc_guide.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006900.bin
e784d781483bdf05fec47b028d77714f8e4cfca9b775039eb7dcca693686f71a
pdf-font-stream PDF embedded font (sfnt) at offset 0x6900 5184 bytes
font_01_sfnt_off00007a9b.bin
435b89d087736c2e75b953fa7c622b67fee91a704677ba447fe0202b857c8823
pdf-font-stream PDF embedded font (sfnt) at offset 0x7A9B 14240 bytes