Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3dc30713a996f98…

MALICIOUS

PDF

49.6 KB Created: 2020-10-26 21:19:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 3aaf1d5923b8044ab2be6357677be9b7 SHA-1: 12c98c13172992ed5ae621b580b723ce7f161a2b SHA-256: e3dc30713a996f986bf187d875a4d38b967c5715fb623807569aca0d26b904f3
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many of which point to a redirector service and other external resources, indicating a link farm or redirection attempt. The ML classifier strongly flagged this PDF as malicious. The primary malicious URL identified is ttraff.com, which is known for redirecting to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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/123?keyword=shaw+engineered+hardwood+cleaning In PDF document text
    • https://cdn-cms.f-static.net/uploads/4388818/normal_5f91024bd4ae4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372104/normal_5f8d8aefb66aa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393489/normal_5f964fe8a063d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0496/6616/2841/files/ekonomiks_grade_9_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4365/9677/files/pathfinder_psionics_augmented.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/0185/0273/files/gubuma.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/2487/1335/files/apache_tomcat_web_server_tutorial.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/7115/4592/files/clash_royale_hack_android_oyun_club.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9155/8551/files/android_vulnerability_scanner_kali_linux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/9903/6058/files/g_shock_ga1000fc_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6120/6422/files/industrial_craft_nuclear_reactor_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0494/4068/6239/files/gerund_infinitive_exercises_with_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0495/9823/4773/files/35578738076.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4263/3890/files/click_clack_rattlebag_theme.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1048/0533/files/icloud_key_unlock_free_online.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0495/1562/6662/files/dragon_ball_z_dokkan_battle_hack_stone.pdfIn PDF document text
    • https://s3.amazonaws.com/zugutixe/oss_bss_architecture.pdfIn PDF document text
    • https://s3.amazonaws.com/zurovajij/pajekizivovafosemot.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c51ffea5-33b0-4c53-af1f-f989fd3929c7/kijiga.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/257d8ef0-05a1-4c53-9864-f9c37edc533b/68613581556.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d9245d27-379b-4553-8f6d-5932a14e9c68/79804882707.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007594.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7594 4924 bytes
SHA-256: ddc0895069c48a2fc707619710965374298bafe2480b4b236aa1da58db9e06f9
font_01_sfnt_off0000863b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x863B 10596 bytes
SHA-256: 15dfc5236d735e3d1600131a3f9506d9c927b2b71415490a42c2ec1d131d2596
font_02_sfnt_off0000aa67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAA67 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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