Malicious PDF — malware analysis report

Static analysis result for SHA-256 527416a1dc75e2c6…

MALICIOUS

PDF

43.0 KB Created: 2020-08-06 02:19:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d4a92541d473edae6ed564b554f344b1 SHA-1: 0c3f0b9e742125318e132141a4811bd430e99f1b SHA-256: 527416a1dc75e2c66ef10030a0ca39d1536378172397bc9e4e75c1136221b450
142 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains multiple embedded links, with one specifically identified as a malicious redirector. The document body, though heavily obfuscated, contains text suggesting a lure related to a 'course manual'. The presence of a malicious redirector and the link farm heuristic indicate an attempt to lead the user to malicious content. The SE_CALLBACK_LURE heuristic further suggests a phishing or scam pretext.

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • 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=advanced+life+support+course+manual+pdf
    • http://files.dylanness.com/uploads/1/3/0/9/130969819/860cb.pdf
    • http://files.digitalpoet.net/uploads/1/3/1/4/131406036/derosaroratabibe.pdf
    • http://nerolejej.creativityandthedivinefeminine.com/uploads/1/3/1/4/131437363/powid-sadijunigopefe.pdf
    • http://files.miscoehillpto.org/uploads/1/3/2/7/132740239/nubipawesu-dafiroto-ranibipumu-susijebutofiwem.pdf
    • https://cdn.shopify.com/s/files/1/0440/5798/5189/files/2_decimal_places_python.pdf
    • https://cdn.shopify.com/s/files/1/0433/8450/4474/files/line_drawing_algorithms_in_computer_graphics.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/67279733654.pdf
    • https://cdn.shopify.com/s/files/1/0434/3057/6278/files/14618486478.pdf
    • https://cdn.shopify.com/s/files/1/0439/0577/7832/files/53937451259.pdf
    • https://cdn.shopify.com/s/files/1/0437/8735/4270/files/soranezumu.pdf
    • https://cdn.shopify.com/s/files/1/0438/2775/7216/files/67400389995.pdf
    • https://cdn.shopify.com/s/files/1/0433/7179/0486/files/acalasia_pediatria.pdf
    • https://cdn.shopify.com/s/files/1/0435/5473/4235/files/1-_99_crafting_guide_rs3.pdf
    • https://cdn.shopify.com/s/files/1/0451/1324/5848/files/save_from_net.pdf
    • https://cdn.shopify.com/s/files/1/0428/6231/3631/files/ximimejiriramudevel.pdf
    • https://cdn.shopify.com/s/files/1/0434/7471/4790/files/kindle_cloud_reader_chrome_extension.pdf
    • https://cdn.shopify.com/s/files/1/0438/8729/6680/files/occupational_health_and_safety_act_wall_chart.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_off000068a6.bin
a5fb06fdca1074a887e7b9571b21eb8f294eee89970a7b4fefed9566ea286af7
pdf-font-stream PDF embedded font (sfnt) at offset 0x68A6 5352 bytes
font_01_sfnt_off00007acc.bin
6f7616fc6b9eca8bd331af1dcc1dc991faf25c2d8b3b52c0070c6ed21775e7a5
pdf-font-stream PDF embedded font (sfnt) at offset 0x7ACC 10616 bytes