Malicious PDF — malware analysis report

Static analysis result for SHA-256 613e5dbe41d03be7…

MALICIOUS

PDF

51.5 KB Created: 2020-10-25 03:48:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 9cbca233db171df014ffef46a6abe6a0 SHA-1: 2b891ee44ec17e5e16d40d2e96481ec360d40319 SHA-256: 613e5dbe41d03be746bd55cf228b468e9c25adcc2034380c91daf914d9d1b1c8
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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.me/123?keyword=manasthapa+prakaranam+japam+in+malayalam+pdf In PDF document text
    • https://rewemekekebaz.weebly.com/uploads/1/3/1/4/131406535/fewupinav.pdfIn PDF document text
    • https://lixaworone.weebly.com/uploads/1/3/1/8/131871871/baxanakomerar.pdfIn PDF document text
    • https://titawijuneve.weebly.com/uploads/1/3/4/0/134012454/1586286.pdfIn PDF document text
    • https://namunobuwuper.weebly.com/uploads/1/3/0/7/130776476/donepogoruxo-bizaj-kigim-xunap.pdfIn PDF document text
    • https://xalipifizipig.weebly.com/uploads/1/3/1/3/131379045/13242.pdfIn PDF document text
    • https://pejopazuzaguwoz.weebly.com/uploads/1/3/2/8/132815183/zadexusu.pdfIn PDF document text
    • https://guratebiliwabop.weebly.com/uploads/1/3/2/6/132682790/zamor-vazedipabefu-loxuzifidozetuj-lanawiluzip.pdfIn PDF document text
    • https://xojerajap.weebly.com/uploads/1/3/1/3/131384359/foburadip.pdfIn PDF document text
    • https://walijogopabo.weebly.com/uploads/1/3/0/7/130776167/1345997.pdfIn PDF document text
    • https://lulitetuxopibol.weebly.com/uploads/1/3/1/1/131164377/4087137.pdfIn PDF document text
    • https://tenagudewujuga.weebly.com/uploads/1/3/1/1/131164273/pedusideda.pdfIn PDF document text
    • https://lodirunesu.weebly.com/uploads/1/3/0/8/130874391/nesasovigene-vepolirujota-gejiwotiv-xonejo.pdfIn PDF document text
    • https://zeronifoza.weebly.com/uploads/1/3/4/3/134312515/tufujoduko-lataguxakidumiw.pdfIn PDF document text
    • https://viweposedijul.weebly.com/uploads/1/3/1/0/131070314/4107459.pdfIn PDF document text
    • http://smc.org.in)MeeraRegularMeera2016SMC7.0.0+20171102HussainIn extracted file (stream_005_off000071a9.bin)
    • http://smc.org.inhttp://smc.org.inIn extracted file (stream_005_off000071a9.bin)
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off000060a0.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off000060a0.bin)
    • http://www.daltonmaag.com/In extracted file (font_03_sfnt_off0000b168.bin)
    • https://cdn.shopify.com/s/files/1/0488/0852/5989/files/jizamalarilolonujarum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6205/0468/files/ponaputibejedezawof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/4415/4791/files/mubogexotagetuzon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/8671/8129/files/benafeluwovib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/1596/2276/files/castle_on_a_hill_song_lyrics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/5849/0275/files/40738668173.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/7790/3551/files/nofojotaditim.pdfIn PDF document text
    • https://s3.amazonaws.com/jipowumat/33474584893.pdfIn PDF document text
    • https://s3.amazonaws.com/pazifetanegapu/que_es_asepsia_y_antisepsia_en_enfermeria.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
    • https://gitlab.com/smc/meera/blob/master/COPYINGIn extracted file (stream_005_off000071a9.bin)
    • http://scripts.sil.org/OFLIn extracted file (font_00_sfnt_off000060a0.bin)

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off000071a9.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x71A9 8344 bytes
SHA-256: c2d47191d176b57fd3eabb4f9684c64e035b3898b2c74e350d66a3f68dd14f8c
font_00_sfnt_off000060a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60A0 5088 bytes
SHA-256: 6128e75e9adf7a0aa9594a9a918709620282fa0586bc53912d74b2705f8f48da
font_02_sfnt_off00008dfb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DFB 10480 bytes
SHA-256: d540e0920b01617b15872689506580693f77733f60f5ace3f8a3ace7ee556bdb
font_03_sfnt_off0000b168.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB168 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e