Malicious PDF — malware analysis report

Static analysis result for SHA-256 b5e47fedf172988b…

MALICIOUS

PDF

23.0 KB Created: 2020-10-23 04:51:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: df7e998604e5c5854ad44847bfb8b2e6 SHA-1: ea1e5da804fbfc3cfc61e8ffefece841311f54d9 SHA-256: b5e47fedf172988b3c845f2524228b2c891408f22d1d810f05338b5316e3d746
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, with one specifically identified as a known malicious redirector. The document body, though heavily obfuscated, contains text related to a Netgear router manual and the URL itself, suggesting a lure to disguise the malicious intent. The presence of a link farm further indicates an attempt to distribute malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9987

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://gettraff.ru/wb?keyword=netgear%20nighthawk%20dual%20band%20ac1900%20cable%20modem%20router%20manual In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366317/normal_5f88979c2503d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369143/normal_5f90819232296.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379855/normal_5f8e089b6b37f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/8583a4c8-26f6-457c-b811-2d1670e07729/vafidetu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aa494dff-e2ae-489b-8b69-dc77b694b1f0/fukakulevoledevugetijisu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/75ff04bc-b161-448b-ba72-311abbb0c810/najusifopukavo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7b4ebdd5-15b0-419c-beab-0251ff209ec5/tilaresofimasewu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/8085/2679/files/network_hardware_components.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2044/3045/files/la_sorcire_grabouilla_partition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/3483/1779/files/dark_brown_hair_dye_permanent.pdfIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/poloxifixazujami.pdfIn PDF document text
    • https://s3.amazonaws.com/wonoti/algorithms_4th_edition_solutions_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files2/zumuzapibedebixajelor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7432/9507/files/transformers_prime_predaking_voice_actor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/8393/2851/files/gamefowl_bloodlines_list.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5495/6695/files/1601806711.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/8392/6171/files/niseko_guided_ski_tours.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d3395903-1f17-4860-bf93-bc16f63dd72d/46161200591.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/969c27b5-ca14-4be6-b2db-9b0737cd9651/didimajexifoludosukal.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1fbe1670-e9aa-4258-92b5-bee1386a3f6e/jegopijopofu.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004a17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4A17 5792 bytes
SHA-256: fbe4ba3d2b06abd70d431354467d05d8d2978eb719fec0c8309ae2a7c2dd828d

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