Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea1e5c106383b8a7…

MALICIOUS

PDF

43.1 KB Created: 2020-08-27 17:52:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 244b48801dc9686c2dfceebeefd54512 SHA-1: c292da567a17e29c75c1381ab86de262fb8dd346 SHA-256: ea1e5c106383b8a70b1e6b9828250d6439b70b40207154eaebc9d9fa65585483
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com. One of the primary links directs to a malicious redirector at ttraff.com, which is likely used to obscure the final destination. The document body, though partially corrupted, contains the text 'Texto argumentativo sobre el tabaco' and the malicious URL, suggesting a lure related to the topic of tobacco. The ML classifier strongly indicated maliciousness.

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/pify?keyword=texto+argumentativo+sobre+el+tabaco
    • http://files.perroneboatdetail.com/uploads/1/3/0/8/130814110/8546316.pdf
    • http://files.hannabasinmuseum.com/uploads/1/3/1/3/131379183/17ac8d907f7ca79.pdf
    • http://files.architecturalfittings.co.uk/uploads/1/3/0/7/130775949/dozatejedimu.pdf
    • http://dinunu.paintingsbypeterjdamon.com/uploads/1/3/2/8/132814989/vedoviw-wibup.pdf
    • https://cdn.shopify.com/s/files/1/0434/5312/0664/files/teziboxoradaranij.pdf
    • https://cdn.shopify.com/s/files/1/0428/2230/3911/files/bonfire_childish_gambino_download_mp.pdf
    • https://cdn.shopify.com/s/files/1/0433/4501/9035/files/mathematics_for_economics_and_business_8th.pdf
    • https://cdn.shopify.com/s/files/1/0437/6231/9518/files/weightlifting_study_guide.pdf
    • https://cdn.shopify.com/s/files/1/0429/0733/6857/files/91538668382.pdf
    • https://cdn.shopify.com/s/files/1/0432/1656/8482/files/wavun.pdf
    • https://cdn.shopify.com/s/files/1/0433/2240/9125/files/nuxagizomavenowomunasedi.pdf
    • https://cdn.shopify.com/s/files/1/0427/4746/1788/files/74174794581.pdf
    • https://cdn.shopify.com/s/files/1/0429/1028/5990/files/pagatuxenowu.pdf
    • https://cdn.shopify.com/s/files/1/0431/9779/2420/files/1253397990.pdf
    • https://cdn.shopify.com/s/files/1/0431/0050/4217/files/ximujolur.pdf
    • https://cdn.shopify.com/s/files/1/0437/8315/9969/files/65336568570.pdf
    • https://cdn.shopify.com/s/files/1/0433/9122/1923/files/13985794391.pdf
    • https://cdn.shopify.com/s/files/1/0430/6776/8981/files/diberamirikoz.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_off00005a2d.bin
5dffe258f2a04b357545a147627d669768fb9407144e04515c73d5fcbb30f0c0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A2D 5216 bytes
font_01_sfnt_off00006bde.bin
0808d0fe74672a6932f204e7804eb12181beca6808a9ff2078c1187cbdf9651b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BDE 11012 bytes
font_02_sfnt_off00008fa9.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8FA9 4324 bytes

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