Malicious PDF — malware analysis report

Static analysis result for SHA-256 0cc7f796eb53f978…

MALICIOUS

PDF

53.9 KB Created: 2020-08-26 12:51:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 853f80b826adcd77d7f1aae9492c6f48 SHA-1: 0bc1c443a9b6ab7e1cbc74ae2f615b208bd0faca SHA-256: 0cc7f796eb53f97893c559ffdf90b77fcf2c9016e6b48d0bef3b86f313a4a678
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=miracles+now+gabrielle+bernstein+pdf'. Additionally, it exhibits characteristics of a PDF link farm, embedding 28 external links, many of which are hosted on Shopify. The ML classifier also strongly flagged this PDF as malicious. While no scripts were extracted, the presence of a malicious URL and the link farm behavior suggest an attempt to redirect users to malicious content or phishing sites.

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.ru/pify?keyword=miracles+now+gabrielle+bernstein+pdf
    • http://givepu.bridgewatercallingtonraiders.com/uploads/1/3/0/8/130874674/3fffa847b599e.pdf
    • http://loxumum.frankmorrisjr.com/uploads/1/3/2/8/132814930/wabedemujil-gimel.pdf
    • http://files.jacksfurnitureplans.com/uploads/1/3/2/3/132302768/likufof.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0434/0465/6790/files/26541749459.pdf
    • https://cdn.shopify.com/s/files/1/0434/0567/2597/files/tajaxetenupiwafufivoxotek.pdf
    • https://cdn.shopify.com/s/files/1/0436/3105/0915/files/eyewitness_report_meaning.pdf
    • https://cdn.shopify.com/s/files/1/0437/1503/5291/files/xalepagolujoxeluw.pdf
    • https://cdn.shopify.com/s/files/1/0434/8785/4749/files/25676243992.pdf
    • https://cdn.shopify.com/s/files/1/0434/0075/7398/files/30180728681.pdf
    • https://cdn.shopify.com/s/files/1/0431/8691/3437/files/opg_deputyship_report_form.pdf
    • https://cdn.shopify.com/s/files/1/0431/2429/3796/files/83062802051.pdf
    • https://cdn.shopify.com/s/files/1/0437/7290/3585/files/skid_steer_backhoe_attachment.pdf
    • https://cdn.shopify.com/s/files/1/0433/1690/4104/files/demiwalorat.pdf
    • https://cdn.shopify.com/s/files/1/0440/7122/3446/files/euclidean_distance_formula.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_off00009293.bin
393ac425aeb423ae3ad197f146e3f59d7f6ccb81761d10026a573b0ce475b252		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9293 5560 bytes
font_01_sfnt_off0000a598.bin
e9248cca6b05029cecc7f1aaf6b2a3bfce2361c38e5c8e3cb5c92376d53d928c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA598 10812 bytes

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