Malicious PDF — malware analysis report

Static analysis result for SHA-256 95f2447bd1b0538d…

MALICIOUS

PDF

49.2 KB Created: 2020-09-01 04:26:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 43beb784285ab3d48d642c229d66b5ee SHA-1: 614ce16575cfc9728c5bf9066d3aca2cad3c0e6c SHA-256: 95f2447bd1b0538db5fe2463b8fda4592a31b121f64182854ccf415e7b2ed620
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with a critical heuristic firing for PDF_SEO_LINK_FARM indicating a potential link farm. One of these links, https://ttraff.com/wix?keyword=capitalize+first+letter+textview+android, is flagged as a malicious redirector. The document body, though heavily obfuscated, contains this URL, suggesting the document's primary purpose is to lure users to malicious infrastructure through a large number of outbound links.

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.com/wix?keyword=capitalize+first+letter+textview+android
    • https://cdn.shopify.com/s/files/1/0437/2630/7480/files/4688440901.pdf
    • https://cdn.shopify.com/s/files/1/0435/1954/1416/files/articulaciones_costovertebrales.pdf
    • https://cdn.shopify.com/s/files/1/0433/1814/9285/files/real_book_volume_2.pdf
    • https://cdn.shopify.com/s/files/1/0432/2505/5389/files/fazasiragivijesu.pdf
    • https://cdn.shopify.com/s/files/1/0438/2359/5677/files/befegidafisipajosanazax.pdf
    • https://cdn.shopify.com/s/files/1/0430/2562/9335/files/gudorefetenowiziwuwif.pdf
    • https://cdn.shopify.com/s/files/1/0448/0398/1463/files/circulatory_system_labeling_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/11067845032.pdf
    • https://cdn.shopify.com/s/files/1/0432/9386/8187/files/vufaresowid.pdf
    • https://cdn.shopify.com/s/files/1/0434/7920/4006/files/malayalam_calendar_2020_january.pdf
    • https://cdn.shopify.com/s/files/1/0433/2349/0457/files/zizedepavodawowafuk.pdf
    • https://cdn.shopify.com/s/files/1/0433/5930/5880/files/setebemalonupiximivabiwa.pdf
    • https://cdn.shopify.com/s/files/1/0432/4638/7367/files/kemanisusovesogojovaki.pdf
    • https://static.usrfiles.com/ugd/544c7e_dc0dfcf2b9744ba0b0c1835b5e0ce01f.pdf
    • https://static.usrfiles.com/ugd/f515ca_77ca1d13ac8146e791b0f89fe1ab3d20.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006c2b.bin
45a731fa8304035aa547630f4b64f7c45f25db0103e7706360a7386a6c7e2d8a
pdf-font-stream PDF embedded font (sfnt) at offset 0x6C2B 5212 bytes
font_01_sfnt_off00007e08.bin
51ebeec29509b87aa858d500e37ac8853184703d07d1f913ce36d8e1dc7764c0
pdf-font-stream PDF embedded font (sfnt) at offset 0x7E08 1800 bytes
font_02_sfnt_off00008696.bin
bc965407d2e842daa9dc5044c8905374921c596a1c7dec21422bc15892f7d471
pdf-font-stream PDF embedded font (sfnt) at offset 0x8696 15480 bytes