Malicious PDF — malware analysis report

Static analysis result for SHA-256 86fbafa3f6d44627…

MALICIOUS

PDF

47.6 KB Created: 2020-10-28 12:17:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 9d583fe7879b7689f86a5a0ebf09c402 SHA-1: e1f852dc825632a7cac69709cf9338385fe36877 SHA-256: 86fbafa3f6d4462727f8a38bf0885ab89c2ccdb51c637c074622d91117d07263
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a redirector URL. The document body, though heavily obfuscated, contains the malicious URL. This suggests the document is designed to drive traffic to malicious infrastructure, likely as part of a phishing or scam campaign.

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://gettraff.ru/strik?keyword=james+woods+family+guy+character In PDF document text
    • https://jilukixewe.weebly.com/uploads/1/3/4/0/134042659/kawabijajel.pdfIn PDF document text
    • https://nogafuku.weebly.com/uploads/1/3/2/8/132815296/sozusor-gofizulukan-pisobal.pdfIn PDF document text
    • https://fawefugixizim.weebly.com/uploads/1/3/1/3/131383791/7013780.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/1/0266/8648/8767/files/hobbywing_program_box_instructions.pdfIn PDF document text
    • https://s3.amazonaws.com/wajufifenoxuj/87824585948.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/60225e67-4514-4ca8-9fd0-b64f9bfe4ef9/lg_tone_ultra_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/8671/2484/files/4_1.5_as_a_fraction.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1275/8426/files/apartment_building_cleaning_checklist.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/51d2a953-2d6b-492a-b3ea-63da1b2aaaec/gesesominigeresarupefu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/8120/6426/files/where_is_the_time_bandit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/686ff5aa-5f66-4631-b765-206f26806cd7/givime.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/3001/9780/files/horse_poems_short.pdfIn PDF document text
    • https://s3.amazonaws.com/wovigebi/13165552971.pdfIn PDF document text
    • https://s3.amazonaws.com/sinamozagemoger/difulobivu.pdfIn PDF document text
    • https://s3.amazonaws.com/zosevid/cakile_maritima.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/5726/1977/files/spotting_dead_elm_trees.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4114/3454/files/rolling_sky_mod_apk_all_levels_unlocked.pdfIn PDF document text
    • https://s3.amazonaws.com/pizexopenaxu/behringer_bxd3000h.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/4952/8727/files/movazolud.pdfIn PDF document text
    • https://s3.amazonaws.com/mozirolinitaje/bacterias_anaerobias_y_aerobias.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/74a9d13d-f086-4ede-8702-73b81ea29ae9/51452941351.pdfIn PDF document text
    • https://s3.amazonaws.com/lekizopiloref/biochemistry_questions_and_answers_on_lipids.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1855/9393/files/22449329301.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_off00007928.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7928 5620 bytes
SHA-256: a9aa57203765a1b9ea4d2719f291cb71b2725ba217205eab97f1f13f3191117d
font_01_sfnt_off00008c36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C36 10764 bytes
SHA-256: bd7eeaa70abf5b92c69e792b6f73e1222e8e37311d8f7fb5eac08e9944aa4654

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