Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e0aad95c89984f2…

MALICIOUS

PDF

44.0 KB Created: 2020-08-18 21:55:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 495e9d8bba7b07167fdb77c5363c5dea SHA-1: 1e3311df7aa3ef1552fb316ec728ccee4577c05b SHA-256: 7e0aad95c89984f2ecda3ef3665ade4171cbe628c5b1560f09c1e1676ad7a0a8
120 Risk Score

Malware Insights

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

The PDF file was identified as malicious due to its inclusion of a link farm containing numerous external PDF links. One of these links, 'https://ttraff.cc/pify?keyword=hd+screen+z+app', is a known malicious redirector. The document body contains obfuscated text and embedded URLs, further supporting the malicious intent. The presence of a link farm suggests an attempt to distribute malicious content or engage in SEO poisoning.

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.cc/pify?keyword=hd+screen+z+app
    • http://lagivu.theconstitutionist.com/uploads/1/3/2/8/132814928/xaxozomiriginuseda.pdf
    • http://files.lindaheffler.com/uploads/1/3/0/8/130874012/bibinoremezupoxur.pdf
    • https://cdn.shopify.com/s/files/1/0437/4495/2471/files/da_form_2823_fillable.pdf
    • https://cdn.shopify.com/s/files/1/0432/7987/6252/files/felitigidubajir.pdf
    • https://cdn.shopify.com/s/files/1/0431/8747/0485/files/18199471856.pdf
    • https://cdn.shopify.com/s/files/1/0434/8759/2608/files/canon_70d_instruction_manual.pdf
    • https://cdn.shopify.com/s/files/1/0439/9444/8030/files/13089632969.pdf
    • https://cdn.shopify.com/s/files/1/0432/7319/1588/files/fuzozadizuxumakef.pdf
    • https://cdn.shopify.com/s/files/1/0430/6560/6301/files/lifodixinukevopasifofoko.pdf
    • https://cdn.shopify.com/s/files/1/0429/7159/4911/files/ti-_30xs_manual.pdf
    • https://cdn.shopify.com/s/files/1/0437/9626/7168/files/79659554874.pdf
    • https://cdn.shopify.com/s/files/1/0433/3430/3912/files/19672974923.pdf
    • https://cdn.shopify.com/s/files/1/0431/0899/1142/files/20684991904.pdf
    • https://cdn.shopify.com/s/files/1/0431/7796/7778/files/68446866163.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_off00006e9e.bin
0b402d254a679975951dd3f286c5f497a64f421dc394bb4d6a86ffa1e3de7894		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E9E 5044 bytes
font_01_sfnt_off00007fd5.bin
abc13c4df966a14908f94ca6283cac40d226a0a48b8bb57be482ecbbbaa78f33		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7FD5 10364 bytes

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