Malicious PDF — malware analysis report

Static analysis result for SHA-256 757bc6da6e58c2e5…

MALICIOUS

PDF

48.7 KB Created: 2020-10-28 21:11:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: b4b13127ab268d01e9687ffaea6101aa SHA-1: c9d66d7626aa18fe1ce9991d0063e3003a2cf34e SHA-256: 757bc6da6e58c2e583c362f50a4dc731552c20907b5ae9971f4f0f28e4d3b563
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 5

  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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.cc/pify?keyword=sai+baba+live+darshan In PDF document text
    • https://xanugobolenaz.weebly.com/uploads/1/3/4/3/134371028/cf16f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378853/normal_5f92113ebdf96.pdfIn PDF document text
    • https://bixivotanaxifu.weebly.com/uploads/1/3/4/4/134449973/2168521.pdfIn PDF document text
    • https://lifotuvuzaraxur.weebly.com/uploads/1/3/0/7/130775275/9275641.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413980/normal_5f98f0f27f54f.pdfIn PDF document text
    • https://welofubevi.weebly.com/uploads/1/3/1/8/131856084/xufes.pdfIn PDF document text
    • https://topemarepebide.weebly.com/uploads/1/3/4/3/134316461/18375f4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382952/normal_5f92b5ab92718.pdfIn PDF document text
    • https://mekuxiwefajup.weebly.com/uploads/1/3/0/7/130739023/1953df354c.pdfIn PDF document text
    • https://riwisasivituw.weebly.com/uploads/1/3/1/0/131070703/6e208a5c1c38d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402517/normal_5f90d391a05f5.pdfIn PDF document text
    • https://koxoganonigowup.weebly.com/uploads/1/3/1/4/131408343/73405fc.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_01_sfnt_off00006184.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_01_sfnt_off00006184.bin)
    • http://www.daltonmaag.com/In extracted file (font_03_sfnt_off00009491.bin)
    • http://fedorahosted.org/lohitIn extracted file (font_04_sfnt_off0000a290.bin)
    • https://s3.amazonaws.com/jinabom/wepolegajenoxiv.pdfIn PDF document text
    • https://s3.amazonaws.com/migivewuwe/antidotes_list.pdfIn PDF document text
    • https://s3.amazonaws.com/fedufiporara/tekorovilevipafesek.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ce80eb4b-88c5-49ec-9f6d-f47cbc3b9904/88496448898.pdfIn PDF document text
    • https://s3.amazonaws.com/tetazino/nawilofekafum.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4ddd48b2-771f-4fd6-a57b-4cb46bc5c51b/62722820216.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/31108178147.pdfIn PDF document text
    • https://s3.amazonaws.com/leguvefu/pilezikuj.pdfIn PDF document text
    • https://s3.amazonaws.com/muwemivumazulax/aceptacion_positiva_incondicional_rogers.pdfIn PDF document text
    • https://s3.amazonaws.com/lejivugeleguwod/zoritunobavef.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/415edc47-bb12-43ed-ad0d-f256a29a845c/25990840768.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2df3cde9-91db-4daf-afb4-368f46d1abd6/fulidetuwuxunipabikiroja.pdfIn PDF document text
    • https://s3.amazonaws.com/regufojalojaza/lawuduvenivixolaludi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/74f500c6-c5ae-4e6c-8d13-c77e03345b79/95321809533.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 extracted file (font_01_sfnt_off00006184.bin)

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000056df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x56DF 2976 bytes
SHA-256: 67d2157d4f86ea6439db37db21b2c711f907de28628c8b197c4b0db8621511b4
font_01_sfnt_off00006184.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6184 4816 bytes
SHA-256: 32775e01cabfe75cf7cf687d85cb25b4f388152073f9347d564e8ddc68dc56e5
font_02_sfnt_off000071b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71B9 10224 bytes
SHA-256: 8bb4ec695640b57cabf7ff7a5a786a80ce7ecd649134da1e2d50f352b794ebe1
font_03_sfnt_off00009491.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9491 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176
font_04_sfnt_off0000a290.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA290 4320 bytes
SHA-256: 0905b0b6ab2e4cf404b02ef675691b2fc942fdd26bc55a80c004e0004cb722aa