Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d2ea6711778938c…

MALICIOUS

PDF

43.2 KB Created: 2020-08-01 00:17:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 26c220761f922b6238d993aa4457e845 SHA-1: 20dd9865bb7c533f7544d308addc2fe8be1283e9 SHA-256: 7d2ea6711778938cdda63610d4fa986dd3d1bd3710cd7b45b9d95bd3c3a0ce3a
154 Risk Score

Malware Insights

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

The PDF contains a link farm and a malicious redirector URL, indicating an attempt to drive traffic to potentially harmful content. The embedded URLs, including the primary malicious redirector `https://ttraff.ru/pify?keyword=haynes+diesel+engine+repair+manual+pdf`, suggest a phishing or scam lure disguised as a repair manual. No scripts were extracted, but the PDF structure and embedded links are indicative of a malicious campaign.

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=haynes+diesel+engine+repair+manual+pdf In PDF document text
    • http://files.newleafhandmade.com/uploads/1/3/0/7/130776225/bopenulog_sowogutob_rumojemula_lugipizulukuja.pdfIn PDF document text
    • http://files.wovenbirthservices.ca/uploads/1/3/0/7/130740249/rupexa.pdfIn PDF document text
    • http://files.hofvanbarlo.nl/uploads/1/3/0/8/130814298/fabuw_fuwixozilog.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7482/2044/files/53257067744.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5103/1447/files/nasologuvaxukovopi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3461/5706/files/devipakum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0568/8483/files/40263131386.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0327/3628/files/29892589186.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6929/0149/files/rizupivezodimexewebovek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3121/5780/files/99601946417.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4647/8759/files/letatuzejurex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2782/3765/files/gadoxinabifeladefu.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000069fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69FA 5424 bytes
SHA-256: a2ae6427849eff1ea8d9232a950629ba3b4f64b2b181c3ae26314d759e97b9fd
font_01_sfnt_off00007c61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C61 10568 bytes
SHA-256: 311465d492ad9fbcd34399895ce0093ece289819f14b81c1a7fd214f97237768

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