Malicious PDF — malware analysis report

Static analysis result for SHA-256 96f10c0e9ea965a1…

MALICIOUS

PDF

41.8 KB Created: 2020-10-28 09:32:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 8eca2c9a07479473cc3e7695b09b6269 SHA-1: 3f71f18e613489ca987d24ffbbfce084b82d9e27 SHA-256: 96f10c0e9ea965a11836bc35a4ad5bef0d31a1af353858bc3096ade2a384c84c
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://ttraff.link/123?keyword=trampoline+black+friday+uk In PDF document text
    • https://vixijusodu.weebly.com/uploads/1/3/0/7/130776714/wafimujilo.pdfIn PDF document text
    • https://lerinajivawexof.weebly.com/uploads/1/3/4/3/134327174/4871273.pdfIn PDF document text
    • https://finazodaxuvoj.weebly.com/uploads/1/3/2/6/132682535/78649c78d89b697.pdfIn PDF document text
    • https://lipowuripipu.weebly.com/uploads/1/3/1/3/131378852/zixevobewuzud_subalufiduz.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00006523.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00006523.bin)
    • https://uploads.strikinglycdn.com/files/873fe19e-92db-40cd-9656-107d4f36a338/47087049925.pdfIn PDF document text
    • https://s3.amazonaws.com/zedudo/facebook_blueprint.pdfIn PDF document text
    • https://s3.amazonaws.com/ronatiduzoxij/medozezasux.pdfIn PDF document text
    • https://s3.amazonaws.com/regegozumekoza/carbohydrate_metabolism_steps.pdfIn PDF document text
    • https://s3.amazonaws.com/jaxesabi/loroviwekadoderi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8047/2984/files/budobekebolimaxugerufolep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/8595/4716/files/dungeons_and_dragons_dungeon_master_handbook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/4010/7413/files/ceragon_ip_10g_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/1503/9908/files/cloak_of_elvenkind_5e_weight.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7777/7061/files/nabugajegatikegugedavebes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/2652/5591/files/dieta_para_pacientes_con_colostomia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9452/2518/files/xojakiguximataxuxiwow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/5978/1023/files/konabenakis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/3876/1109/files/newige.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7075/8816/files/ideal_gas_law_worksheet_review_answer_key.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/8793/0561/files/bergen_county_towns_with_good_schools.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_off00006523.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006523.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6523 5376 bytes
SHA-256: a24fdeed0b5a99001000782cdc159f5578bcfb5f8db25291a73dde5af401b00d
font_01_sfnt_off00007753.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7753 10220 bytes
SHA-256: b2cad51d42d8e2295d2657d42dc40ce9b886e768da872ee13b4f49a974a16741