Malicious PDF — malware analysis report

Static analysis result for SHA-256 07b0c19228afb417…

MALICIOUS

PDF

48.5 KB Created: 2020-10-17 20:57:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 2d814cb79b0a32b35b8b3f74d584d803 SHA-1: 2ef93e0b09b37e01f8489b597d2eaeb5f76d22d0 SHA-256: 07b0c19228afb4171148c25f11dba5c15bdf17954b2d1227de2c1f628badc6af
154 Risk Score

Malware Insights

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

The PDF contains a link farm designed to redirect users to malicious infrastructure, specifically identified by the critical heuristic PDF_MALICIOUS_REDIRECTOR_LINK. The document body and embedded link actions suggest an attempt to lure users into clicking through to potentially harmful content. While no scripts were directly extracted, the presence of embedded URLs and the ML classification strongly indicate 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://ttraff.me/123?keyword=leer+el+tabaco+pdf In PDF document text
    • https://jarapitoxedomel.weebly.com/uploads/1/3/1/4/131437170/4444795.pdfIn PDF document text
    • https://jamuseramomuf.weebly.com/uploads/1/3/1/8/131871426/sobibizagavubuna.pdfIn PDF document text
    • https://besavikeneg.weebly.com/uploads/1/3/2/8/132815808/kazomelivum-koboro-kefodaluwewafag-poded.pdfIn PDF document text
    • https://givifajilodox.weebly.com/uploads/1/3/0/8/130874655/nuribepopovexu.pdfIn PDF document text
    • https://naroxelilokatud.weebly.com/uploads/1/3/1/3/131384214/fa4af31e1db.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/1/0497/8094/9146/files/vatevuwijomoguv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9512/8216/files/fozejakomutof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/9602/4245/files/71008481667.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8706/8322/files/exid_up_and_down_lyrics_english.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/26abeee3-5f52-4fce-a3b8-8da2ddab033f/pipasomedazasufo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/39e2f1c0-1b44-425e-942c-b1d1a636edd1/66712713449.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/57ab8680-fa21-4c73-88c7-1ae1a3fe7821/zalupizukenorawuduwiwixew.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/da88e4c1-9185-469f-afff-896392c035b3/jatufixaw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8259df28-54a2-45db-916f-c6b8fd8563f0/pogubotinofamoxama.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3667/2162/files/xekiwasowisos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4012/6614/files/sowomegagenazemerenaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4353/6552/files/vlogger_go_viral_apk_indir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6321/3209/files/jubiragadedupo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0476/7481/8726/files/android_wear_apk_old_version.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0303/4276/files/st_lamberts_church_sioux_falls.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9359/0170/files/wijosopekolemazabi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/1422/0699/files/wixejelikawiwurob.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f6676357-db99-4fd7-bf3f-80ce663cb4a9/sibufovugobuju.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2a7a2aa4-02f5-47d2-9132-832c01de524c/sesiratadoliku.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e563cd2e-8229-4582-b75e-32e8049ae099/kegaloverexiriligokuzidig.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_off00007cdb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CDB 5052 bytes
SHA-256: ea27c93e50eadb245b4ad7eaa57707d31f43fc0bcc87a67c594291b4881d476d
font_01_sfnt_off00008e15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E15 11252 bytes
SHA-256: a6d12ca6d9f9f80428a98894cbf0efb82a108cf752b8f01168ab2dc0de4af4c6