Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e7f4ec194853069…

MALICIOUS

PDF

58.4 KB Created: 2020-10-15 07:36:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: b1b933b27726fc64a042d30af740a031 SHA-1: 7fae35841139c998386a875120dcdbff441ecb8d SHA-256: 8e7f4ec19485306985b8845b483aafe6e1824bc2c0b856630b9b87cdeac77e68
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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=irobot+roomba+s9%252B+manual In PDF document text
    • https://site-1039667.mozfiles.com/files/1039667/jeweturaxil.pdfIn PDF document text
    • https://site-1042187.mozfiles.com/files/1042187/69470113153.pdfIn PDF document text
    • https://site-1037069.mozfiles.com/files/1037069/60216174023.pdfIn PDF document text
    • https://site-1043603.mozfiles.com/files/1043603/63685330914.pdfIn PDF document text
    • https://site-1044300.mozfiles.com/files/1044300/jizilizomumuwiwavufezuveg.pdfIn PDF document text
    • https://site-1042556.mozfiles.com/files/1042556/11364752247.pdfIn PDF document text
    • https://site-1043352.mozfiles.com/files/1043352/26689036182.pdfIn PDF document text
    • https://site-1039833.mozfiles.com/files/1039833/linev.pdfIn PDF document text
    • https://site-1039431.mozfiles.com/files/1039431/wipisanividewajim.pdfIn PDF document text
    • https://site-1038694.mozfiles.com/files/1038694/14187247224.pdfIn PDF document text
    • https://batagokefo.weebly.com/uploads/1/3/1/0/131070859/77362.pdfIn PDF document text
    • https://jawowigo.weebly.com/uploads/1/3/0/7/130774982/2c69fb73c2f5.pdfIn PDF document text
    • https://biwugina.weebly.com/uploads/1/3/1/1/131163984/5386213.pdfIn PDF document text
    • https://vozutadisifik.weebly.com/uploads/1/3/1/4/131483249/9186477.pdfIn PDF document text
    • https://site-1040131.mozfiles.com/files/1040131/39893549691.pdfIn PDF document text
    • https://site-1041501.mozfiles.com/files/1041501/jiwanaxodadi.pdfIn PDF document text
    • https://site-1039641.mozfiles.com/files/1039641/vujogamodetetazurujimave.pdfIn PDF document text
    • https://site-1043574.mozfiles.com/files/1043574/18089516425.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • https://uploads.strikinglycdn.com/files/262363d1-5a63-4c63-a0fd-2d83d6a276c6/29786355797.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/02e30ef8-7e95-4b62-928b-456cf70511c4/70418210463.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aab6a6dd-175f-4fc7-94eb-df38b4bce080/71423238416.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/32df740f-ef26-4401-a92a-19e6310c19ba/vizowafatamugezofosomimow.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/719b6300-d652-4c38-bee0-7a3d6e2d0755/33519015734.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ea5559fa-9a83-4091-9440-6ee7efe4d267/48867451109.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d9d38afa-5038-4d78-82bd-e36dd49f31af/daluzot.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
    • http://www.gnu.org/licenses/gpl.htmlIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000674f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x674F 5160 bytes
SHA-256: ed8c604599acc4ec0b4831bccf4b2282cb0535ae77fb67b56530929d090f9cda
font_01_sfnt_off00007982.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7982 5064 bytes
SHA-256: 010a1e078f6b64c7790aa2ceedcc1c942a867ec36db9ed7cf5a200d3cc81c81a
font_02_sfnt_off00008a88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A88 6640 bytes
SHA-256: c8cb303e765c67f43d6d34f29c1d02953890772ff7b697be779fb29335000f72
font_03_sfnt_off00009c27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9C27 11252 bytes
SHA-256: aca7b8f6361dfb4e7747a466cfea2ed11c878352dada8a4e41c909512464c67b
font_04_sfnt_off0000c218.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC218 16960 bytes
SHA-256: 3a531a797f134df4b8a9e67ee9dde2f9efa537ad3754761c012f3cc95f3e4ffb