Malicious PDF — malware analysis report

Static analysis result for SHA-256 72adcff6f6207342…

MALICIOUS

PDF

46.8 KB Created: 2020-08-23 18:56:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a5e2ef8cbb4b3890a0f8a75c65dda6eb SHA-1: b9f7084cf2f977b9231647f145c904775375a6d9 SHA-256: 72adcff6f62073422235d3173081eb3f5499c49aaf02fabdcc00c4d5aa0ba124
154 Risk Score

Malware Insights

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

The PDF contains embedded URLs that point to known malicious redirector infrastructure, specifically 'ttraff.ru'. The document body, though partially corrupted, includes text suggesting it is an annual report, likely a lure. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' confirms the malicious nature of the embedded links, indicating a phishing or malware distribution attempt.

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=frasers+property+limited+annual+report+2018
    • http://files.ourfamilyhistory1.com/uploads/1/3/1/4/131406885/6e4151.pdf
    • http://files.scortinoandson.com/uploads/1/3/0/7/130775295/7075166.pdf
    • http://files.greenfieldiowapubliclibrary.com/uploads/1/3/1/4/131438211/b541ff0.pdf
    • http://kawepivab.mychinesesecret.com/uploads/1/3/0/7/130739664/4288967.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0432/6742/4412/files/wavelet_transform_matlab_code_for_feature_extraction.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/37357510366.pdf
    • https://cdn.shopify.com/s/files/1/0431/3304/2839/files/missed_dental_appointment_letter_template.pdf
    • https://cdn.shopify.com/s/files/1/0437/6018/9594/files/comentario_a_la_tica_a_nicmaco_de_aristteles.pdf
    • https://cdn.shopify.com/s/files/1/0437/9816/7713/files/82191186871.pdf
    • https://cdn.shopify.com/s/files/1/0437/1460/9305/files/clinician_administered_ptsd_scale_caps.pdf
    • https://cdn.shopify.com/s/files/1/0444/1748/2919/files/nsw_school_calendar_2020.pdf
    • https://cdn.shopify.com/s/files/1/0432/7541/9812/files/66401837290.pdf
    • https://cdn.shopify.com/s/files/1/0440/0644/1125/files/59123307416.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/37144816260.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005f11.bin
31ae7ea8180766d4a88e65bd7b4dcb905a6bae2e89c77e388dccd72b969e6668		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F11 5564 bytes
font_01_sfnt_off000071e6.bin
3a2adf5c202ed04336450c9d1f402d9496e0147991cde804ab5181d05c0f5432		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71E6 14908 bytes
font_02_sfnt_off00009fb8.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9FB8 4324 bytes

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