Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6865ea4d9dba49f…

MALICIOUS

PDF

66.6 KB Created: 2021-03-23 11:24:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 452f2c2c3154c8edf726be0ada79d3e0 SHA-1: dcd297c93df840ab47fc22b5761d1f031bbea23d SHA-256: e6865ea4d9dba49f05ded2b8dae1cca97cb62f37023be8cc16ba608718a78481
146 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. It uses a callback-phone (TOAD) lure. 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 0.9998

Heuristics 6

  • 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 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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/wix?keyword=%25E2%2580%25A2+http+%252F%252Fwww.seussville.com%252F%2523games PDF link annotation
    • http://heliusdesign.ru/what_is_the_best_5.1_soundbarxe1wt.pdfIn PDF document text
    • http://blognews.top/867479207310t874.pdfIn PDF document text
    • http://ubzvp.com/3969698138eeusx.pdfIn PDF document text
    • http://pubgucbayim.com/genie_wireless_keypad_programingk08yw.pdfIn PDF document text
    • http://kebenoda.scienceontheweb.net/zutidepujizeva.pdfIn PDF document text
    • http://cashbackk.site/22180371966j0z6w.pdfIn PDF document text
    • http://latuha.com/27427435768gbkei.pdfIn PDF document text
    • http://lixodamevurobar.mygamesonline.org/namijoxi.pdfIn PDF document text
    • http://ladyso.ru/how_to_use_contour_next_lancing_devicewkezx.pdfIn PDF document text
    • http://mscgis.net/dialga_smogon_dp5ji5r.pdfIn PDF document text
    • http://torchqbfl.fun/66865894320dcg9r.pdfIn PDF document text
    • http://afterdealer.pro/mexodovitezalodeto7oatg.pdfIn PDF document text
    • http://grizhoff.ru/amcor_af9000e_nanomax_portable_air_conditioner_manualgrazc.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://merijezogaxik.epizy.com/zedavel.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/de0867c8-cbd3-42de-8d1e-e21144cf5829/what_is_cell_theory_short_answer.pdfIn PDF document text
    • http://xedovafimolodem.epizy.com/anybody_can_dance_2_all_song.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d37a53bc-d2ef-4979-98f4-3750b4ef9763/washington_state_university_tuition_payment.pdfIn PDF document text
    • http://wedutatitupaze.epizy.com/cuestionario_ser_bachiller_2019.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_off0000c693.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC693 5056 bytes
SHA-256: 96764149cd228fe27309a47015e8981e76cae9df59e03aa8bbd80da4b8c600fb
font_01_sfnt_off0000d7d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7D2 11024 bytes
SHA-256: 3893cd6d71f2ac680b555564207895c70a01562132b63a2596ec3a18b5cba37f

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