Malicious PDF — malware analysis report

Static analysis result for SHA-256 d001d40819f9ce87…

MALICIOUS

PDF

41.6 KB Created: 2020-08-19 10:42:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 075a0ebe8c72a867859e643a08483614 SHA-1: 19569985e4710a045b46bc341463a3d1aa67ffa6 SHA-256: d001d40819f9ce87161b33ca9ac2a94792ca12c1762ccef25f7e582f63504e95
128 Risk Score

Malware Insights

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

The PDF contains a link farm and a specific malicious redirector URL, indicating a phishing or malware distribution attempt. The document body text, though partially corrupted, contains a lure related to 'Android apps for windows 10 laptop' and the malicious redirector URL. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK strongly suggests the primary purpose is to redirect users to malicious content.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.cc/pify?keyword=android+apps+for+windows+10+laptop
    • http://files.buzzmodels.net/uploads/1/3/0/8/130813054/guxosiken.pdf
    • https://cdn.shopify.com/s/files/1/0448/9543/6955/files/dessert_business_plan.pdf
    • https://cdn.shopify.com/s/files/1/0437/3502/3770/files/bipolar_ii_disorder_workbook.pdf
    • https://cdn.shopify.com/s/files/1/0462/8722/4993/files/43675940409.pdf
    • https://cdn.shopify.com/s/files/1/0430/4823/9257/files/personal_swot_analysis_examples.pdf
    • https://cdn.shopify.com/s/files/1/0430/2897/1681/files/38696471986.pdf
    • https://cdn.shopify.com/s/files/1/0427/5381/8790/files/64624069440.pdf
    • https://cdn.shopify.com/s/files/1/0434/7835/2022/files/kujaletoxawidafejefo.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/89709194360.pdf
    • https://cdn.shopify.com/s/files/1/0438/3604/7522/files/sowutebepatak.pdf
    • https://cdn.shopify.com/s/files/1/0433/9567/8359/files/59014455782.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000064f9.bin
0ef94a7bd65c185e6ca617d3c91ca2b51a00139bcd41ea1b14f2375891b3c2ef		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64F9 5312 bytes
font_01_sfnt_off00007726.bin
18493585b486a12fb18e03f5f5e3599f4baeae5e5e8c7e1db42eb81f388cce5e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7726 10128 bytes

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