Malicious PDF — malware analysis report

Static analysis result for SHA-256 562dc00a5432c8b6…

MALICIOUS

PDF

117.7 KB Created: 2021-05-21 10:29:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: bcdb8cea9f8e719ea7e79d0f58295e16 SHA-1: 5e8b5754a7c445ef404604dad9d10fc38ce59a05 SHA-256: 562dc00a5432c8b6c648229d608f3f8befa002c44ab139d3bfeed9b24a01cf78
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and 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 0.9993

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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://resalured.ru/strik?utm_term=ejemplos+de+factorar+o+descomponer+en+dos+factores PDF link annotation
    • https://pumelagu.weebly.com/uploads/1/3/2/8/132814433/bivul_jivawekegonux_dutasabemura_subaj.pdfIn PDF document text
    • https://givepatodanino.weebly.com/uploads/1/3/6/0/136097232/gumegobugope.pdfIn PDF document text
    • https://sijudunewofas.weebly.com/uploads/1/3/4/6/134696620/7874232.pdfIn PDF document text
    • https://guwosifewutus.weebly.com/uploads/1/3/4/6/134616196/kemenukowosu.pdfIn PDF document text
    • https://lakojelot.weebly.com/uploads/1/3/1/6/131637836/numavofese.pdfIn PDF document text
    • https://zaxonoso.weebly.com/uploads/1/3/1/3/131381259/busuvowagud-zebimevudobeg.pdfIn PDF document text
    • https://kikafizujugu.weebly.com/uploads/1/3/4/0/134012642/da8fd7.pdfIn PDF document text
    • https://wilexezixokesu.weebly.com/uploads/1/3/4/7/134764798/povomopovi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/zaxefemebidaz/35234246993.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/daefdef0-c975-45af-a4b0-ba297fd5443a/what_is_the_main_idea_of_this_political_cartoon.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7ff5c511-9417-4996-8a50-b13bfa32e1e4/dokijetiwagepafojexabiwu.pdfIn PDF document text
    • https://s3.amazonaws.com/tubukeganuji/18822320964.pdfIn PDF document text
    • https://s3.amazonaws.com/novifamigot/football_manager_handheld_2018_free.pdfIn PDF document text
    • https://s3.amazonaws.com/xepululejiwof/fisher_paykel_error_4_dryer.pdfIn PDF document text
    • https://s3.amazonaws.com/kosamupim/7678027355.pdfIn PDF document text
    • https://s3.amazonaws.com/legenapi/15232180379.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/89319e76-cc06-4d9f-a170-8daabb5da6de/febot.pdfIn PDF document text
    • https://s3.amazonaws.com/zeworibuzoza/1st_grade_math_games_for_zoom.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d40e484f-bf87-463e-bde9-b66ce8744b89/bluegrass_guitar_licks_in_g.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a7aff576-6e8a-4515-9e96-8074969328d7/65787012623.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a7710564-b0ba-4acd-91eb-94ecbc9dc43a/10662924069.pdfIn PDF document text
    • https://s3.amazonaws.com/rozebofukixus/apex_legends_mirage_guide_reddit.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000170a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x170A2 5336 bytes
SHA-256: 8773c3d1a36232ab6e86f37e1cbb9573a72ad34fa1623e1ba10c13f9ff98249a
font_01_sfnt_off000182b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x182B6 14088 bytes
SHA-256: 2056bf9cfd1b8f027ae45f7ea10e1652fe257060726a1ba443e05e6e175c7b4f
font_02_sfnt_off0001b071.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1B071 16244 bytes
SHA-256: 59280e4115cd1620531b91fc05ba15008938c9afb013ae168b5a6fc22a7569bc

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