Malicious PDF — malware analysis report

Static analysis result for SHA-256 68268980238196c2…

MALICIOUS

PDF

54.3 KB Created: 2020-08-26 13:05:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a21cdaf195113fbb1e6dd3075db286a5 SHA-1: 28b8c95d1d6edc74a16ba64e35948d15ac17964c SHA-256: 68268980238196c2bb0d5fe6b9425d10a374115f7cbab91fab4c3c024085636f
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm hosted on Shopify, and one critical link redirects to known malicious infrastructure. The document body, though heavily corrupted, contains text suggesting a movie title and the malicious URL, indicating a lure to drive traffic to malicious sites. No scripts were extracted, but the presence of numerous links and the malicious redirector strongly suggests an attempt to lead users to harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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=how+high+pelicula+completa+en+espa%25C3%25B1o
    • http://files.sammybeaugard.com/uploads/1/3/0/7/130776341/7192266.pdf
    • http://files.maffaainc.com/uploads/1/3/1/3/131383318/dedebi.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://fedorahosted.org/lohit
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0429/1641/3607/files/xolojafenigasoserer.pdf
    • https://cdn.shopify.com/s/files/1/0434/8575/7606/files/87915454138.pdf
    • https://cdn.shopify.com/s/files/1/0437/6903/6962/files/46763462631.pdf
    • https://cdn.shopify.com/s/files/1/0436/3508/1374/files/96721205844.pdf
    • https://cdn.shopify.com/s/files/1/0433/4406/8773/files/93473544015.pdf
    • https://cdn.shopify.com/s/files/1/0434/0826/1276/files/30175121609.pdf
    • https://cdn.shopify.com/s/files/1/0439/6898/7294/files/cool_java_code.pdf
    • https://cdn.shopify.com/s/files/1/0437/4075/8170/files/auxiliary_projection.pdf
    • https://cdn.shopify.com/s/files/1/0437/6972/5080/files/79496083941.pdf
    • https://cdn.shopify.com/s/files/1/0434/4987/6630/files/12_cranial_nerves_and_functions.pdf
    • https://cdn.shopify.com/s/files/1/0432/1381/5966/files/wudukomejera.pdf
    • https://cdn.shopify.com/s/files/1/0431/3173/2122/files/lirunibopelegawuda.pdf
    • https://cdn.shopify.com/s/files/1/0434/4836/9319/files/autogenes_training_formeln_rauchen.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005cce.bin
ba9dd86ad06677ef82b9fc66565cbe1db364e5caa8fb73f24ce3e10b7ab9a08b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5CCE 2960 bytes
font_01_sfnt_off00006751.bin
066358733ddb5c82227cb9e310dd6990651589626aca1abf803a347ce4c0699e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6751 5396 bytes
font_02_sfnt_off0000795e.bin
5b91c186c0d2506cbb1932d417fe2e40edf424c68f696d43443a27f8f7fee313		 pdf-font-stream PDF embedded font (sfnt) at offset 0x795E 2316 bytes
font_03_sfnt_off0000834b.bin
62e4831de172048b149e06b0fafd121330177ae918c2d5de0b1d5b553b2a7249		 pdf-font-stream PDF embedded font (sfnt) at offset 0x834B 9964 bytes
font_04_sfnt_off0000a573.bin
c4441e48b2f68604838bd51e3092d1355fc6ad73caca962ec91191dcf11ac5c9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA573 16224 bytes
font_05_sfnt_off0000ba9a.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBA9A 4324 bytes

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