Malicious PDF — malware analysis report

Static analysis result for SHA-256 150753a07a121437…

MALICIOUS

PDF

79.7 KB Created: 2020-07-31 00:05:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d6b1358357d567055e01fd3e5d167515 SHA-1: 418ef37d8eb7ba678cf4ac43dac221dd14e5c2c6 SHA-256: 150753a07a1214372bd7cbf7a407d2a49c3c4232a7a5b6903bbf17d3c8a26f73
154 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to malicious infrastructure, specifically identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, suggests a lure related to '100 adverbios en ingles pdf', likely to entice users to click the malicious links. The ML classifier also 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=100+adverbios+en+ingles+pdf
    • http://files.staywhole.net/uploads/1/3/1/4/131454355/7906d2762eac09.pdf
    • http://files.catechistcafe.com/uploads/1/3/0/8/130814716/lerowexomujawos-vedasaki.pdf
    • http://files.longford.coralleisure.ie/uploads/1/3/1/3/131383743/pasalefewo-jozawo-zufurewogexom.pdf
    • http://files.snail-loves.com/uploads/1/3/0/8/130814515/934bd15c17d6b6.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0437/2630/7480/files/pologipap.pdf
    • https://cdn.shopify.com/s/files/1/0434/1540/4702/files/nilafunakogunego.pdf
    • https://cdn.shopify.com/s/files/1/0432/3141/2379/files/99461676623.pdf
    • https://cdn.shopify.com/s/files/1/0432/6146/0644/files/gopogudolamipanimowen.pdf
    • https://cdn.shopify.com/s/files/1/0433/9898/7941/files/44579338120.pdf
    • https://cdn.shopify.com/s/files/1/0433/6015/7855/files/niwarizubolopebaponebubu.pdf
    • https://cdn.shopify.com/s/files/1/0433/3754/7929/files/divepipetotokabo.pdf
    • https://cdn.shopify.com/s/files/1/0433/4272/5275/files/26125621574.pdf
    • https://cdn.shopify.com/s/files/1/0435/7675/4344/files/dedonojo.pdf
    • https://cdn.shopify.com/s/files/1/0431/7901/6360/files/82945839528.pdf
    • https://cdn.shopify.com/s/files/1/0429/3692/6374/files/21555940679.pdf
    • https://cdn.shopify.com/s/files/1/0433/7631/2471/files/35278230185.pdf
    • https://cdn.shopify.com/s/files/1/0431/3071/6326/files/72667441956.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_off0000ee49.bin
4547b0e6d221db51d20c2bb7666b87d406964ec9a6f9a3e771d8292fb3eba8b8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEE49 5216 bytes
font_01_sfnt_off00010004.bin
a6215caa366c7532ca3abf6e22662f6004c94cd64c1b4fee2d0098aa31247ef9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10004 15544 bytes

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