Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7c1df17a2ad85b7…

MALICIOUS

PDF

46.4 KB Created: 2020-10-18 06:20:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: b416c0af3ec64fb8dc12e35555781ad5 SHA-1: 4375bc0c6685998deaff8552a6e85511c7d7289b SHA-256: e7c1df17a2ad85b7146fca5ab2cfc20fddd7874c582f1384e4e6ce8df40ac9ad
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of embedded links, with the primary URL identified as a malicious redirector. This suggests the document is designed to drive traffic to malicious infrastructure, potentially for phishing or SEO poisoning. No scripts were extracted, but the PDF structure and embedded links are indicative of malicious intent.

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://ggtraff.ru/123?keyword=singer+start+1306+sewing+machine+manual In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366040/normal_5f89af79e2107.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365539/normal_5f890adb2f04e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376362/normal_5f89f30288a33.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365580/normal_5f8924a9e42ac.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366033/normal_5f87472e191c5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368984/normal_5f88055f9b12f.pdfIn PDF document text
    • https://moxitasa.weebly.com/uploads/1/3/1/4/131454719/8c1127db71dab.pdfIn PDF document text
    • https://jawowigo.weebly.com/uploads/1/3/0/7/130774982/1323023.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/8937/4621/files/16149560382.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/6443/3061/files/chers_son_in_the_movie_mask.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/5711/8883/files/i_was_wrong_manga_author.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0714/6146/files/walter_dean_myers_famous_books.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/9827/8555/files/30895175162.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/8245/2644/files/the_executive_branch_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0491/8185/1814/files/wifi_tools_apk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/1879/9264/files/swtor_legacy_surname.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2703/6322/files/jewip.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/77d2dc6d-1c26-4dd9-960e-3a541b4f0395/somuwegazoro.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9e21b3e2-7619-4544-8852-8a3d0674c450/36554585193.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d0fe846f-adbb-4684-9da7-9cbcbcab9222/61505433833.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f48ad027-fee7-4f12-b724-00781418a5f4/ganokutokowazunig.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f7c2d1f5-d995-4a1e-a2d9-3a9526287735/9798593301.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_off00006ae2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AE2 5920 bytes
SHA-256: 69daa96604efd1bc110adf36efcfaab58e34303d596da49f509ae7a4f48959e5
font_01_sfnt_off00007ee4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EE4 1800 bytes
SHA-256: a36eee06fef6ce219692c4ec918276ac99413e4fd1e3666e4031624f9289d620
font_02_sfnt_off00008771.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8771 10120 bytes
SHA-256: 0c59ba2ac7c3c0f1df12eb0994ae3f4f3099008d8ed801fbc07b0a90d2ba2f41

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