Malicious PDF — malware analysis report

Static analysis result for SHA-256 92a3ff9354bf31eb…

MALICIOUS

PDF

61.9 KB Created: 2020-10-25 08:16:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 2966d0e4fabda7a6400167a0985b0596 SHA-1: e77ad2350e4f4312ab93563f31223965954792ca SHA-256: 92a3ff9354bf31ebc2cffc4dc4d12bdaf13477e7b0af649ce6821d6b7322dec3
234 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • 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/aws?keyword=ugc+6th+pay+commission+report+pdf In PDF document text
    • https://juporolo.weebly.com/uploads/1/3/1/3/131380745/8647159.pdfIn PDF document text
    • https://lipowuripipu.weebly.com/uploads/1/3/1/3/131378852/zozesonefoviz-ruraxawojuzetu-naler.pdfIn PDF document text
    • https://paxesejok.weebly.com/uploads/1/3/4/3/134348383/f69e1f0ba5c31.pdfIn PDF document text
    • https://jimigafekalese.weebly.com/uploads/1/3/1/4/131407537/jojun.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388183/normal_5f8f391b333a0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368249/normal_5f8c91cc34f3d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390071/normal_5f8ebd2eb2e2c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376380/normal_5f8a97b51492c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368496/normal_5f94c0ba75ab3.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off0000a24e.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off0000a24e.bin)
    • http://www.daltonmaag.com/In extracted file (font_02_sfnt_off0000db82.bin)
    • https://s3.amazonaws.com/dukajevo/91838621629.pdfIn PDF document text
    • https://s3.amazonaws.com/babetafaperaxov/canon_2000d_specification.pdfIn PDF document text
    • https://s3.amazonaws.com/babuxufarizuxur/24684478305.pdfIn PDF document text
    • https://s3.amazonaws.com/jumedemimo/allergenen_iconen.pdfIn PDF document text
    • https://s3.amazonaws.com/felasorarabipis/important_days_and_themes_2019_in_tamil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/6875/1523/files/6309963543.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1731/2152/files/wasekasanaremizetik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1467/4841/files/zawiwebo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/6470/4155/files/gemozibupaferiva.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/7603/3943/files/ww1_causes_crossword_puzzle_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/439770d2-7c4a-4400-8485-bfcc3fc27d2b/self_trepanation_high.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c713e122-adbc-430a-8674-7afe3f62c3c8/gekufugisasu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b0d2f7f2-dd43-4f90-ac66-146862409b25/wefuvaf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f95df797-6771-414d-9919-63e32d62918b/71432683911.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_off0000a24e.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a24e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA24E 5572 bytes
SHA-256: 37b800bcd9da77d54e167a69fd3cf17a1f4e8614c95c82a399899f073b86e7d5
font_01_sfnt_off0000b51a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB51A 11440 bytes
SHA-256: d07d6565f0b16668481f9fe434aa44ea28a176577f92b22d0d5d5042b4cdb13e
font_02_sfnt_off0000db82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB82 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e