Malicious PDF — malware analysis report

Static analysis result for SHA-256 04670be8afe226c1…

MALICIOUS

PDF

44.2 KB Created: 2020-08-13 14:43:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 107ddbb272bb932258b372f28e96573c SHA-1: 6a1af675f12bc59882ede73f9543ebd82e4b195b SHA-256: 04670be8afe226c11800ceeb31ba80399076285ac9f74c092acf51903d25b256
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which point to a link farm hosted on Shopify, designed to appear as legitimate downloads. One prominent link, however, directs to a known malicious redirector at 'ttraff.com', disguised as a search result for 'cutepdf printer for windows xp free download'. This suggests a phishing or malware distribution attempt, likely using the PDF as a lure to drive traffic to malicious infrastructure.

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/wb?keyword=cutepdf%20printer%20for%20windows%20xp%20free%20download
    • http://files.disarmingdoomsday.com/uploads/1/3/1/4/131453022/37638d.pdf
    • http://files.missflowersclassroom.com/uploads/1/3/2/8/132816195/633f00c.pdf
    • http://files.joenorrellart.com/uploads/1/3/2/3/132303068/8419546.pdf
    • http://files.southpreschurch.org/uploads/1/3/0/7/130775851/gojedi-xovej-nevoriw.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0434/5213/7622/files/94322488898.pdf
    • https://cdn.shopify.com/s/files/1/0438/2490/6397/files/zababoxuxiwat.pdf
    • https://cdn.shopify.com/s/files/1/0437/6556/3549/files/vawudilaxurixafuki.pdf
    • https://cdn.shopify.com/s/files/1/0431/9716/9824/files/bible_stories_for_kids.pdf
    • https://cdn.shopify.com/s/files/1/0430/6750/6849/files/2812795171.pdf
    • https://cdn.shopify.com/s/files/1/0433/8089/9991/files/94414241331.pdf
    • https://cdn.shopify.com/s/files/1/0431/9812/0094/files/cylinder_smc.pdf
    • https://cdn.shopify.com/s/files/1/0433/8846/9411/files/26450042543.pdf
    • https://cdn.shopify.com/s/files/1/0434/2225/3205/files/english_synonyms_test.pdf
    • https://cdn.shopify.com/s/files/1/0428/6336/2204/files/nolodepunakizoguve.pdf
    • https://cdn.shopify.com/s/files/1/0434/0459/1255/files/ginowuvudovolabiwul.pdf
    • https://cdn.shopify.com/s/files/1/0438/9847/0552/files/substitution_reaction_in_square_planar_complexes.pdf
    • https://cdn.shopify.com/s/files/1/0428/5192/6183/files/zogeka.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005a6a.bin
3d6e6f302efa2c7347bad136af80590978d2e02f607ef3c45c510c24ff032801		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A6A 5100 bytes
font_01_sfnt_off00006bef.bin
332f005ffbcbfb9ed7a1a0269344fbeee6b793215be3176eec6b04fe26cddfa0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BEF 13044 bytes
font_02_sfnt_off000095a4.bin
781b9fae2fb9201b4a05d2041fea553bb2973f1d011ab9c51e3326c72e342c60		 pdf-font-stream PDF embedded font (sfnt) at offset 0x95A4 4324 bytes

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