Malicious PDF — malware analysis report

Static analysis result for SHA-256 e704c9e143fa5cca…

MALICIOUS

PDF

50.7 KB Created: 2020-08-21 20:25:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: be5deb1075ce827d4ec3e9c4e03180bc SHA-1: ea4c773e5006788cf2f3b88e714b785b5582d6a6 SHA-256: e704c9e143fa5ccaf96e167b932af82eb8d4dd532907c0d29fc977e8f498133e
150 Risk Score

Malware Insights

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

The PDF contains numerous links, including a critical redirector link to 'ttraff.ru' disguised as a free agenda planner. This is further supported by a PDF link farm heuristic, indicating a large number of outbound links. The ML classifier also strongly flagged this PDF as malicious. The primary attack vector appears to be social engineering through deceptive links within the document.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.ru/pify?keyword=agenda+planner+2019++gratis
    • http://files.prestigeservicesleeds.co.uk/uploads/1/3/2/7/132712358/5599d60654e.pdf
    • http://files.brewerfirstrobotics.com/uploads/1/3/2/6/132681558/gitulebe.pdf
    • http://juvanago.exploredreamdiscover.ca/uploads/1/3/0/8/130873822/316693.pdf
    • http://soxifowu.allisonfutterman.com/uploads/1/3/0/7/130740440/lajeloruzesapegen.pdf
    • http://files.jessejsanchez.com/uploads/1/3/1/3/131379183/nibuzinarotime_wopixigona.pdf
    • https://cdn.shopify.com/s/files/1/0429/0550/1852/files/networking_essentials_checkpoint_exam_answers.pdf
    • https://cdn.shopify.com/s/files/1/0433/8548/7516/files/how_to_run_exe_on_mac.pdf
    • https://cdn.shopify.com/s/files/1/0435/4903/2607/files/muscle_workout_guide.pdf
    • https://cdn.shopify.com/s/files/1/0436/4340/4441/files/butoxewawizabuwuv.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/27360052690.pdf
    • https://cdn.shopify.com/s/files/1/0430/8857/6661/files/difference_between_static_and_dynamic.pdf
    • https://cdn.shopify.com/s/files/1/0431/7695/1957/files/6656980690.pdf
    • https://cdn.shopify.com/s/files/1/0432/5546/4104/files/43723657324.pdf
    • https://cdn.shopify.com/s/files/1/0435/5427/5479/files/obligation_modal_verbs_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0435/0928/5024/files/android_update_version_7._0.pdf
    • https://cdn.shopify.com/s/files/1/0429/6579/4965/files/89813693006.pdf
    • https://cdn.shopify.com/s/files/1/0435/3441/8075/files/vamanapukifajuzidatadodop.pdf
    • https://cdn.shopify.com/s/files/1/0431/3330/4986/files/76368654346.pdf
    • https://cdn.shopify.com/s/files/1/0435/2134/3647/files/laporan_kasus_hernia_inguinalis_lateralis.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_off000079a6.bin
403ab88e3ba2192003b89f2e03926a67cd91425f2fd5ce28b330c08367802158
pdf-font-stream PDF embedded font (sfnt) at offset 0x79A6 5596 bytes
font_01_sfnt_off00008cb5.bin
86fb883695d8aa7493cb1939c48e75d2d3ece814ac3f2473cb3936fb081ed28d
pdf-font-stream PDF embedded font (sfnt) at offset 0x8CB5 2884 bytes
font_02_sfnt_off00009874.bin
6537b5ba09292b1194e1ab70f15316f08ad8c3e318d9b10cfa4e461ff1c8c317
pdf-font-stream PDF embedded font (sfnt) at offset 0x9874 10944 bytes