Malicious PDF — malware analysis report

Static analysis result for SHA-256 26a3a3abd4834703…

MALICIOUS

PDF

49.2 KB Created: 2020-10-27 13:39:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: df8be8c8188bc8a06404f73596190fce SHA-1: 1065c0c93b6a4218b6e300bb4d2f39696dd53910 SHA-256: 26a3a3abd4834703a288f23cf90f3aa89d3d302ada807731e3f387e88f104f37
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://cctraff.ru/123?keyword=kadhalum+kadanthu+pogum+full+movie In PDF document text
    • https://lipowuripipu.weebly.com/uploads/1/3/1/3/131378852/zozesonefoviz-ruraxawojuzetu-naler.pdfIn PDF document text
    • https://finiluxexolije.weebly.com/uploads/1/3/1/8/131856594/porupeporise-lovude-notojowukal-siniwisu.pdfIn PDF document text
    • https://kozezivu.weebly.com/uploads/1/3/4/4/134444222/2400843.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00006b53.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00006b53.bin)
    • https://cdn.shopify.com/s/files/1/0500/5328/4008/files/jagajogogi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/3372/5592/files/black_bullet_characters.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3690/8439/files/sherlock_holmes_books_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/4600/5664/files/chesapeake_shores_episode_guide_season_2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5458/8316/files/gudatonebovixijimel.pdfIn PDF document text
    • https://s3.amazonaws.com/nawosineromigi/reborurov.pdfIn PDF document text
    • https://s3.amazonaws.com/memul/ruzefapazubawuzi.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/kawasaki_z125_pro_service_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/vavale/astronomy_today_chaisson.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/9150/0449/files/maui_county_police_department_phone_number.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/9602/9357/files/fuvujiloruz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0493/7534/6847/files/53551992560.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0268/7087/4284/files/norolisisujireri.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0667/3575/files/nosukugutexoforum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3482/1287/files/jajenoxigugedaxanita.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/7297/8585/files/individuals_with_disabilities_education_act.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/7147/8168/files/mi_note_7_pro_review_android_authority.pdfIn PDF document text
    • https://s3.amazonaws.com/foneniz/tesiredofaselusita.pdfIn PDF document text
    • https://s3.amazonaws.com/leguvefu/turixobetuni.pdfIn PDF document text
    • https://s3.amazonaws.com/belapawerezuju/makalah_filariasis_lengkap.pdfIn PDF document text
    • https://s3.amazonaws.com/dugibabafod/blue_rage_black_redemption.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 extracted file (font_00_sfnt_off00006b53.bin)
    • http://dejavu.sourceforge.netIn extracted file (font_02_sfnt_off0000a1f8.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_02_sfnt_off0000a1f8.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006b53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B53 5276 bytes
SHA-256: 8ae2d1f3fb54e7445e3321d3ea1d072a9a72c4b2189d88af0bc63d706480eff6
font_01_sfnt_off00007d30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D30 10720 bytes
SHA-256: e30131638ac2dd10738555c43d96e6510b747c6dfb05188454fcfa92c2383bb3
font_02_sfnt_off0000a1f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA1F8 16164 bytes
SHA-256: 6e3fbd491d8b71441998836ddca0d0c102716a221ea14f8143929167ad9a79b3