Malicious PDF — malware analysis report

Static analysis result for SHA-256 65fb8818b0848fe7…

MALICIOUS

PDF

42.0 KB Created: 2020-08-19 01:25:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f8b756bd0cef4d1a1699616bfc369b14 SHA-1: e030907bf55d679fd0b9f23cc29ce453a6b9b25f SHA-256: 65fb8818b0848fe7df0b98417b51bb78577796f17858a5265dd3f9eff26c6367
154 Risk Score

Malware Insights

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

The PDF contains embedded links, one of which, 'https://ttraff.cc/pify?keyword=report+power+outage+eversource+ct', is flagged as a malicious redirector. The document body and heuristics suggest a lure related to power outages, likely intended to trick the user into clicking the malicious link. The presence of numerous other links, many pointing to benign Shopify URLs, indicates a link farm strategy, but the critical redirector link is the primary threat. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

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=report+power+outage+eversource+ct
    • http://jakit.echolaliaredacted.com/uploads/1/3/1/3/131380213/lovove_doxugafi.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0437/8152/1565/files/caoba_arbol.pdf
    • https://cdn.shopify.com/s/files/1/0430/0718/0954/files/xilivafotopufozuxuxawote.pdf
    • https://cdn.shopify.com/s/files/1/0431/9451/5614/files/attack_on_titan_season_1_english_dub.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/50751207741.pdf
    • https://cdn.shopify.com/s/files/1/0434/5207/2088/files/windows_7_xbox_one_controller_driver.pdf
    • https://cdn.shopify.com/s/files/1/0435/5214/5560/files/21677405403.pdf
    • https://cdn.shopify.com/s/files/1/0438/9902/7611/files/legujif.pdf
    • https://cdn.shopify.com/s/files/1/0432/2469/4942/files/xotujes.pdf
    • https://cdn.shopify.com/s/files/1/0434/7399/3890/files/tudoru.pdf
    • https://cdn.shopify.com/s/files/1/0432/5395/6758/files/bulomobaw.pdf
    • https://cdn.shopify.com/s/files/1/0433/4161/1159/files/formal_wear_for_university_interview.pdf
    • https://cdn.shopify.com/s/files/1/0429/9957/8773/files/68524651506.pdf
    • https://cdn.shopify.com/s/files/1/0433/7316/6744/files/60675827006.pdf
    • https://cdn.shopify.com/s/files/1/0432/8341/5204/files/kalikexe.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_off000066bf.bin
0e86a6241db2108fdc67b8e00b55427c8219357d46fdc1dcca77ee9e56ca2308		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66BF 5228 bytes
font_01_sfnt_off000078b8.bin
48f03a8c119cac18d27818783bc93846fe4845fa93bb8205d934d94127686811		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78B8 10076 bytes

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