Malicious PDF — malware analysis report

Static analysis result for SHA-256 07e6c4de66ff433e…

MALICIOUS

PDF

36.2 KB Created: 2020-08-09 11:26:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 93babc61916d3b0dc572b732237a1d51 SHA-1: e365aaad1edfe80d3dc96fcc4f6e0dc19b1137c4 SHA-256: 07e6c4de66ff433e38e2b4efbb4accf802665b64a1e0e1a752770dabc12c0c0a
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically identified as a malicious redirector. The document body, though heavily obfuscated, contains text that appears to be a lure for 'autocad 2020 tutorial pdf for mechanical engineering', directing users to the malicious URL. The presence of many external PDF links suggests a link farm or SEO manipulation tactic to distribute malicious content.

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=autocad+2020+tutorial+pdf+for+mechanical+engineering
    • http://files.jrscholarship.org/uploads/1/3/1/4/131408024/323f22.pdf
    • http://files.kishonnagray.com/uploads/1/3/1/0/131070144/kivotivuwupi-vatuxugo-jozij-vevobolod.pdf
    • http://files.jolenewright.com/uploads/1/3/2/8/132814967/297cec94771.pdf
    • http://files.dagriffincircuit.org/uploads/1/3/2/6/132682640/1517d03df.pdf
    • http://files.craftychefs.co.uk/uploads/1/3/2/6/132681517/vumejatetap.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0432/5729/9099/files/apartment_ownership_act_1970.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/81236671698.pdf
    • https://cdn.shopify.com/s/files/1/0433/9033/7189/files/23674651456.pdf
    • https://cdn.shopify.com/s/files/1/0433/1818/2041/files/56517028846.pdf
    • https://cdn.shopify.com/s/files/1/0433/1651/0873/files/bk_shivani_quotes.pdf
    • https://cdn.shopify.com/s/files/1/0427/6987/5111/files/55667232043.pdf
    • https://cdn.shopify.com/s/files/1/0430/3588/5721/files/10360476494.pdf
    • https://cdn.shopify.com/s/files/1/0431/1180/9190/files/gelojepojotabire.pdf
    • https://cdn.shopify.com/s/files/1/0429/3646/7612/files/gubijutorivimemavivojig.pdf
    • https://cdn.shopify.com/s/files/1/0434/2890/5127/files/wironufezurujatolulijomim.pdf
    • https://cdn.shopify.com/s/files/1/0431/4952/5149/files/inhibidores_del_metabolismo_bacteriano.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_off00004db8.bin
d35c451d429c360328775fcde7b806117f83d591c076f05823e03991040b248d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4DB8 5656 bytes
font_01_sfnt_off000060cc.bin
45f5daae6ceec066914e4a0a77546db792efdc3bb54ec23b4eb8fe6870ce49c4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60CC 10192 bytes

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