Malicious PDF — malware analysis report

Static analysis result for SHA-256 f29a0e75cfc4d0b0…

MALICIOUS

PDF

51.4 KB Created: 2020-07-19 17:21:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9662a3ae960ba079aee5a28d79d2c595 SHA-1: ce7099cfe9be32c1a4d24a452487f32e4d765413 SHA-256: f29a0e75cfc4d0b071fa13512f1bb339302380aabd9074ad4ac2edb0d0a9dba6
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, identified as a link farm. One critical heuristic indicates a link to known malicious redirector infrastructure at 'ttraff.com'. The document body, though heavily obfuscated, contains metadata suggesting it was generated by wkhtmltopdf. The primary attack pattern involves luring users to click on these numerous links, which likely lead to malicious content or phishing pages.

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/pify?keyword=ovarian+hyperstimulation+syndrome+pdf
    • http://files.morrinsvillecommunityhouse.org/uploads/1/3/2/6/132682829/gomaro.pdf
    • http://files.kingsburg4h.com/uploads/1/3/1/3/131384432/javusenixi_timoxidof_tupobow_fimalomurukezi.pdf
    • http://files.vallancelab.com/uploads/1/3/0/7/130776241/dotedejapovu-rimavu.pdf
    • http://files.delythdaviesdesigns.co.uk/uploads/1/3/2/3/132302926/3032357.pdf
    • https://mumovesutaj.files.wordpress.com/2020/06/zebitawivigixowifigatili.pdf
    • https://fuzevibob.files.wordpress.com/2020/06/favubakijivufibisuzazuw.pdf
    • https://lixemam.files.wordpress.com/2020/06/sexuvuveludakotojeb.pdf
    • https://pawogigamot.files.wordpress.com/2020/06/jekixepuxirobagoxamokan.pdf
    • https://lupafedur.files.wordpress.com/2020/06/63130689304.pdf
    • https://tufatakoxa.files.wordpress.com/2020/07/49323424877.pdf
    • https://numewim.files.wordpress.com/2020/06/jerideludexudu.pdf
    • https://dutilexov.files.wordpress.com/2020/06/gexapa.pdf
    • https://cdn.shopify.com/s/files/1/0428/3629/5836/files/53616762219.pdf
    • https://cdn.shopify.com/s/files/1/0427/5719/3895/files/912913520.pdf
    • https://cdn.shopify.com/s/files/1/0430/4296/3613/files/61539247531.pdf
    • https://cdn.shopify.com/s/files/1/0434/6390/1336/files/xajevosoxifuzotulikawas.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vinupagudesezubinu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/36103472339.pdf
    • https://cdn.shopify.com/s/files/1/0431/2937/2832/files/56332428443.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/41078692832.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/rixozuxixewu.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/
    • https://pawogigamot.files.wordpress.com/2020/06/jekixepuxirobagoxamo

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008ab3.bin
7b29dde4f8839b18224371f9b49a938eca54cf48e7b3701dfead434378dd0baf
pdf-font-stream PDF embedded font (sfnt) at offset 0x8AB3 5352 bytes
font_01_sfnt_off00009cbd.bin
bf309795f895a3fb3be8319e330a4fe0d0cfec17aa2643e89488dff0f2500bba
pdf-font-stream PDF embedded font (sfnt) at offset 0x9CBD 10372 bytes