Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d0529948a6ed851…

MALICIOUS

PDF

42.7 KB Created: 2020-10-08 08:42:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 0e8a7fff756091087b28827fc149c160 SHA-1: 6cf13a2b8cc87349b22e1aa6244c905c603a678d SHA-256: 1d0529948a6ed8515b4320a3e8278a78d6f125ef2cd3c0f2fb43c081b5b5cd41
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.cc/pify?keyword=musical.ly+followers+hack+app In PDF document text
    • http://files.thegoldeneagles.org/uploads/1/3/0/8/130813025/rixop_xesalozikedo_pipepeketubos.pdfIn PDF document text
    • http://files.worldreadyschools.com/uploads/1/3/1/3/131379405/6951108.pdfIn PDF document text
    • http://files.tranquilmomentsskincare.com/uploads/1/3/0/7/130775127/xevaxumizegum.pdfIn PDF document text
    • http://vipid.yourperfectflooring.com/uploads/1/3/1/4/131408024/gapedulogeda_fafisudeb.pdfIn PDF document text
    • https://site-1037878.mozfiles.com/files/1037878/biwubotojinamevuri.pdfIn PDF document text
    • https://site-1038567.mozfiles.com/files/1038567/zofukunevoxaloxagaza.pdfIn PDF document text
    • https://site-1040574.mozfiles.com/files/1040574/ranimilaratadul.pdfIn PDF document text
    • https://site-1036799.mozfiles.com/files/1036799/55036362582.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/4116/8801/files/69619538740.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/9051/2545/files/citizenship_in_the_world_completed_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9473/7045/files/strategy_an_introduction_to_game_theory_watson.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8266/9464/files/70236440842.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/5983/4787/files/coldplay_reading_books_of_old_lyrics.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_off000067d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67D4 5400 bytes
SHA-256: 61535ac3e1fa9e131a5c32cd12b30723a64231847d6eeaddaca431c27662f631
font_01_sfnt_off00007a55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A55 10384 bytes
SHA-256: 180e1a8fb8a80fca3d83f52b844faa9babe1c5f9edcf4aa83d92f2a37232a35f