Malicious PDF — malware analysis report

Static analysis result for SHA-256 66e71d2e20b4854f…

MALICIOUS

PDF

34.5 KB Created: 2020-08-13 03:52:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a45a0891fd971d11ebd2c90d0292f8fb SHA-1: 5e52c20fc6cafeb278947fe310ae5cdf01370060 SHA-256: 66e71d2e20b4854f934f8f5d4a1fe324bdbe926c228841018b763c7dcec5c4f9
154 Risk Score

Malware Insights

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

The PDF contains numerous links, with one specifically pointing to a known malicious redirector infrastructure. The document body, though heavily obfuscated, contains a URL that mirrors the malicious redirector's target. This suggests a phishing or scam attempt designed to lead users to harmful content, likely through a link farm strategy.

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=salesforce+developer+documentation+pdf
    • http://files.drbrightman.com/uploads/1/3/1/0/131070362/8526000.pdf
    • http://files.thetruthsayerswoodstock.com/uploads/1/3/0/7/130740571/2097480.pdf
    • http://files.bondentertainmentservices.com/uploads/1/3/1/4/131452958/8131597.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0437/6897/1421/files/econometrics_exam.pdf
    • https://cdn.shopify.com/s/files/1/0432/6244/3683/files/donemek.pdf
    • https://cdn.shopify.com/s/files/1/0428/9894/8255/files/61900484588.pdf
    • https://cdn.shopify.com/s/files/1/0431/8196/5474/files/mevimiwerapimob.pdf
    • https://cdn.shopify.com/s/files/1/0427/7246/3772/files/bisumubolosutibot.pdf
    • https://cdn.shopify.com/s/files/1/0432/2649/7182/files/61308250762.pdf
    • https://cdn.shopify.com/s/files/1/0438/2015/5037/files/35804511392.pdf
    • https://cdn.shopify.com/s/files/1/0434/0806/4677/files/cessna_172sp_checklist.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pigirerunozekolufis.pdf
    • https://cdn.shopify.com/s/files/1/0436/8164/4697/files/webukozuzokopiwe.pdf
    • https://cdn.shopify.com/s/files/1/0432/8125/2512/files/resop.pdf
    • https://cdn.shopify.com/s/files/1/0431/4651/0504/files/kibivodakitibunasiwoloxe.pdf
    • https://cdn.shopify.com/s/files/1/0430/8706/9335/files/22901157293.pdf
    • https://cdn.shopify.com/s/files/1/0433/5376/8095/files/28441388901.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_off00004a43.bin
1787ce7ef82abe126f5dc64af7ce5b6ffd4b20493769d8871e505e7ff41e42bb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4A43 5464 bytes
font_01_sfnt_off00005cc3.bin
c8cd512f7ae6a7cd60b35a08f24e44b49bee4dcfe8175642e581410c39454b39		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5CC3 9496 bytes

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