Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c46af58710ecdba…

MALICIOUS

PDF

48.0 KB Created: 2020-11-07 22:19:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 039f2742f6788e65383005840750020a SHA-1: 9087707cc45737295484fdb68d044d074577685a SHA-256: 3c46af58710ecdba72d3fb6439b2e77a4f331d4013dee1294fa2b6ee23214742
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafffe.ru/aws?keyword=jenn+air+ice+maker+manual PDF link annotation
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/xizaxamuxive.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365560/normal_5f8c7c88e7ae8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383801/normal_5f914ba081941.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://sibamefekin.files.wordpress.com/2020/11/fetomagujexalera.pdfIn PDF document text
    • https://xikawakomaxe.files.wordpress.com/2020/11/bisowegujame.pdfIn PDF document text
    • https://binunix.files.wordpress.com/2020/11/12245582438.pdfIn PDF document text
    • https://zirevafove.files.wordpress.com/2020/11/egypt_new_capital_map.pdfIn PDF document text
    • https://zufavenasefu.files.wordpress.com/2020/11/25441398321.pdfIn PDF document text
    • https://dusikoxi.files.wordpress.com/2020/11/allegedly_book_online.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/80d7e0de-4697-4b27-8a6f-ae526278a847/39339686714.pdfIn PDF document text
    • https://xupuzen.files.wordpress.com/2020/11/xirokukeligalamenetobu.pdfIn PDF document text
    • https://desoputuwi.files.wordpress.com/2020/11/newt_scamander_chocolate_frog_card.pdfIn PDF document text
    • https://pigavusa.files.wordpress.com/2020/11/28401750077.pdfIn PDF document text
    • https://rosebuzi.files.wordpress.com/2020/11/majomu.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007da4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DA4 4820 bytes
SHA-256: 95626c7afa8ea25b3e18628549954df07d194c918485adebbe4b95f2edce3054
font_01_sfnt_off00008df4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DF4 11008 bytes
SHA-256: e6144bcfb846c07e3fab0dbac1e03c24aeb99fa34064e6fdfd8fedbf1efc19b5

Open this report in the interactive analyzer, or submit your own file for analysis.