Malicious PDF — malware analysis report

Static analysis result for SHA-256 aea26c674a7c72ac…

MALICIOUS

PDF

48.9 KB Created: 2020-08-26 22:42:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b911defbcc91d75d7248876d5cec52c8 SHA-1: 341ba1ff8c13501a649b19d8349e46139692aae3 SHA-256: aea26c674a7c72ac30cc5c057a29441161d90980153aad30feae6797670ed4db
150 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link and a link farm, both pointing to resources that likely host malware or facilitate phishing. The document body explicitly mentions 'Adobe illustrator gratuit crack', indicating a lure for users seeking pirated software. The presence of numerous external links, many hosted on Shopify, suggests a broad distribution effort. No scripts were extracted, but the PDF structure and embedded links are sufficient to infer a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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=adobe+illustrator+gratuit+crack
    • http://files.nopss.com/uploads/1/3/1/6/131606366/bubagepimi-tobusiboxib.pdf
    • http://rumok.bewellinstitute.org/uploads/1/3/1/3/131379803/kegevojelazuxe-nusugozidosu.pdf
    • http://files.garethworthington.com/uploads/1/3/0/7/130776757/d26288238b6.pdf
    • https://cdn.shopify.com/s/files/1/0434/7602/5497/files/50730507415.pdf
    • https://cdn.shopify.com/s/files/1/0432/0083/9841/files/boardwalk_apk_here.pdf
    • https://cdn.shopify.com/s/files/1/0430/8402/1921/files/vibivagujoxekoz.pdf
    • https://cdn.shopify.com/s/files/1/0437/9148/3032/files/yahoo_market_data.pdf
    • https://cdn.shopify.com/s/files/1/0431/1518/4277/files/vehicle_bill_of_sale_louisiana.pdf
    • https://cdn.shopify.com/s/files/1/0430/7881/1797/files/xelipilijoxumalozumujolu.pdf
    • https://cdn.shopify.com/s/files/1/0436/4373/2126/files/zipukixoful.pdf
    • https://cdn.shopify.com/s/files/1/0447/8690/9341/files/spring_batch_tutorial_download.pdf
    • https://cdn.shopify.com/s/files/1/0436/4333/8912/files/canadian_visa_lottery_application_form_2019_20.pdf
    • https://cdn.shopify.com/s/files/1/0434/2379/3308/files/bimesapap.pdf
    • https://cdn.shopify.com/s/files/1/0433/7218/3710/files/responsive_classroom_teacher_language.pdf
    • https://cdn.shopify.com/s/files/1/0428/8105/6935/files/digezarexiwopagagug.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_off00007305.bin
f1e4daa91cd59f6d183cc346e2a4db4e2039ca215573d121f585138e4256b100
pdf-font-stream PDF embedded font (sfnt) at offset 0x7305 5076 bytes
font_01_sfnt_off00008454.bin
523670540839fe2595d59b3efd577d6e9183e2e23e05e407fa45d48b7b43cc01
pdf-font-stream PDF embedded font (sfnt) at offset 0x8454 10372 bytes
font_02_sfnt_off0000a7e1.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176
pdf-font-stream PDF embedded font (sfnt) at offset 0xA7E1 4324 bytes