Malicious PDF — malware analysis report

Static analysis result for SHA-256 3185592f0dcbc043…

MALICIOUS

PDF

57.5 KB Created: 2020-07-21 10:03:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3844c980bf71bd4c12717e515f6e47f4 SHA-1: 7e8bd31a108d8bb3c65c9b731235d1669256ad9f SHA-256: 3185592f0dcbc0437daf4aeb3fab12071389b909f1ec0495031135ed054b2fdc
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a large number of embedded links, with many pointing to Shopify domains and one specifically to a known malicious redirector at ttraff.com. The ML classifier also strongly indicated maliciousness. The document body appears to be corrupted or heavily encoded, preventing a clear understanding of its purported content, but the link farm and redirector heuristic strongly suggest a malicious intent, likely to lure users to malicious 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.com/wb?keyword=the%20muscle%20and%20strength%20pyramid%20pdf%20espa%C3%B1ol
    • http://files.pinsonbaptistchurch.org/uploads/1/3/1/3/131398133/vanifiramuwus-zelazar-kawiz-jadujoririfuz.pdf
    • http://files.leasalanon.com/uploads/1/3/0/8/130814342/1547558.pdf
    • http://files.marcomollonutrition.co.nz/uploads/1/3/0/7/130775987/bcbdf2.pdf
    • http://files.tecmobowl-vs-rbi.com/uploads/1/3/0/7/130775694/242d3d917b1b81.pdf
    • https://pdfs.best/downloads/Muscle-Strength-Pyramid-Nutrici��n-entrenamiento.pdf
    • https://cdn.shopify.com/s/files/1/0428/2476/1507/files/dowonanonuwegemuv.pdf
    • https://cdn.shopify.com/s/files/1/0428/9301/7247/files/fivufakido.pdf
    • https://cdn.shopify.com/s/files/1/0433/8617/5651/files/15158510231.pdf
    • https://cdn.shopify.com/s/files/1/0430/7619/0361/files/29402773977.pdf
    • https://cdn.shopify.com/s/files/1/0431/3900/6632/files/giwobosawupedezugad.pdf
    • https://kidugusex.files.wordpress.com/2020/07/doruwosog.pdf
    • https://rikitav.files.wordpress.com/2020/07/kiwosisunanuxedojin.pdf
    • https://kugedabi.files.wordpress.com/2020/07/jidudovopofopene.pdf
    • https://gilumoribeva521533245.files.wordpress.com/2020/07/siwajusaxibopigopi.pdf
    • https://cdn.shopify.com/s/files/1/0431/5637/3670/files/xitedabugijapipimenogavaf.pdf
    • https://cdn.shopify.com/s/files/1/0430/6075/6641/files/98166641345.pdf
    • https://cdn.shopify.com/s/files/1/0432/4163/5997/files/rabupulovufixefabewiri.pdf
    • https://cdn.shopify.com/s/files/1/0429/0222/5059/files/57063147151.pdf
    • https://cdn.shopify.com/s/files/1/0428/7604/3423/files/pixuzuxado.pdf
    • https://cdn.shopify.com/s/files/1/0431/5352/2850/files/wofosu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kekesapenogetiru.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/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000088fa.bin
fdc15e1b8bed2021209d57328e49cf3b26792b8ce53d61b485a5eed5739f8338		 pdf-font-stream PDF embedded font (sfnt) at offset 0x88FA 5716 bytes
font_01_sfnt_off00009bff.bin
4645b887912763d5ee5ebe3bde55136cea455618eac11b94591b4babd7d0d29e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9BFF 10648 bytes
font_02_sfnt_off0000c049.bin
e93acd332f5893643511f4cefd38969ad5c744ad1b08842a788b6be7d277dd15		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC049 16204 bytes

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