Malicious PDF — malware analysis report

Static analysis result for SHA-256 db561ca981169557…

MALICIOUS

PDF

54.0 KB Created: 2020-08-08 13:58:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e2f3e62c4dadaae69a698680051fa685 SHA-1: 77947ecbdb2ee70afbf2a6dfd0555700503cda96 SHA-256: db561ca981169557008305790b34609df6034d5112dbfb77c03bf91b3b649346
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a mass external link farm, with a primary link pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the same redirector URL. This suggests the PDF is designed to trick users into clicking malicious links, likely leading to further malware downloads or phishing pages.

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=malayalam+bible+speech+pdf+download
    • http://files.tammytidbits.com/uploads/1/3/2/6/132681264/8539b37b30fe209.pdf
    • http://xuzamaxo.arkansaspropertymaintenance.com/uploads/1/3/0/7/130775734/4562363.pdf
    • http://files.acebrasstrio.com/uploads/1/3/1/3/131398236/8cf92bfcc.pdf
    • https://cdn.shopify.com/s/files/1/0436/9442/4232/files/43873499719.pdf
    • https://cdn.shopify.com/s/files/1/0436/7079/8489/files/converting_metric_measurements_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0430/0449/3987/files/electrical_machines_interview_questions_and_answers_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/0236/3045/files/tardiness_theory.pdf
    • https://cdn.shopify.com/s/files/1/0433/2794/6904/files/gezoxigew.pdf
    • https://cdn.shopify.com/s/files/1/0437/4583/7208/files/compliance_risk_management_process.pdf
    • https://cdn.shopify.com/s/files/1/0430/9296/7581/files/zakim.pdf
    • https://cdn.shopify.com/s/files/1/0432/3049/4878/files/fikikuvakarupuwoxijor.pdf
    • https://cdn.shopify.com/s/files/1/0430/7920/5013/files/48345946625.pdf
    • https://cdn.shopify.com/s/files/1/0432/9200/0406/files/zulujufa.pdf
    • https://cdn.shopify.com/s/files/1/0429/3971/1655/files/16913765191.pdf
    • https://cdn.shopify.com/s/files/1/0429/6507/4086/files/7062112858.pdf
    • https://cdn.shopify.com/s/files/1/0434/1324/2005/files/yo_tarot_alejandro_jodorowsky.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005e3a.bin
217ccef522dc5b5e7d72c85c0f495605628d9fd45a973e2e7187cb2613a3e204		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5E3A 18708 bytes
font_00_sfnt_off00004c24.bin
3d4bdac8f9f0d7a64e312d8f5c816daf14312fc09716f5591434fb48d8bab2aa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4C24 5344 bytes
font_02_sfnt_off00009703.bin
fad707b4029adf17ae7e522afcd173829b34eade1a9616e23f6d4762e196da5c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9703 10212 bytes
font_03_sfnt_off0000b997.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB997 4324 bytes

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