Malicious PDF — malware analysis report

Static analysis result for SHA-256 d23fc68b61398565…

MALICIOUS

PDF

44.7 KB Created: 2020-10-08 07:20:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 7df15babdf6082b0105a4c1e84d5f14e SHA-1: bdea1e443a83a4807f1b20a32e38b27423cf9275 SHA-256: d23fc68b6139856545eda7546e58401c0bbb852e857d41401428308cbc9219da
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://ggtraff.ru/strik?keyword=starbound+hentai+mods In PDF document text
    • http://juvirenam.malshamsiaudit.ae/uploads/1/3/1/8/131856646/ropabopujoruza_zaluxuvelekoxe_tulosamuguva.pdfIn PDF document text
    • http://files.nwgirlstock.org/uploads/1/3/1/4/131437948/d4f3101fb874d2f.pdfIn PDF document text
    • http://tefage.wolcottlmc.com/uploads/1/3/1/4/131453501/wukapapuwozebol-danebipefirulo-bibudezenosigi-pipezaxi.pdfIn PDF document text
    • http://files.blackdovecreative.com/uploads/1/3/2/7/132740467/sulimejojipiwa_xoxubazamev.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tarijo.the-bx-press-inc.square.site/uploads/1/3/0/7/130739811/vodulubusul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/9388/8676/files/evasion_jailbreak_8.2.0.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0492/3467/3830/files/where_lactic_acid_fermentation_occurs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/9075/8817/files/king_st_primary.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/3142/8761/files/mount_carmel_berkeley_heights_new_jersey.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/32d24b34-fd3b-456b-b7b9-49fbf1c14bd9/67068283570.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c20c3240-1936-4754-8336-8dc743028558/vemivoxukasegilafopega.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/89d8c7e8-829e-42c0-a3ea-3ac0931b134d/vinusifololebuloli.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cb3985a7-0309-4a05-b923-baa2fa428667/23482309990.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b6468448-08cb-4106-947c-7d884c224ab8/19626329694.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3f30cc54-add2-4399-bb77-eaec4df34568/48218233681.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_off000070f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70F3 5276 bytes
SHA-256: a91bccc494e2f300194e8f6981da715f214b71e9fc92ef2a7fd450fc235c5cb0
font_01_sfnt_off000082af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82AF 10424 bytes
SHA-256: 445109f814c485b256e6f8ad0232b834a19f593d3e7594843184ecc1f0559d30

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