Malicious PDF — malware analysis report

Static analysis result for SHA-256 254df25fc75396cb…

MALICIOUS

PDF

48.6 KB Created: 2020-10-28 09:08:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: ce461956253f6c77e6c0eb2c7b6722c9 SHA-1: dbade64b351e6d439040ba91b02d4c85c440cf5c SHA-256: 254df25fc75396cbe65815e0cfcf25e44a47316acf82eaf8dcef7f23dcde1934
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/pify?keyword=pokemon+games+apk+mod+download In PDF document text
    • https://kawuloxegulul.weebly.com/uploads/1/3/4/3/134389306/424ab2ec23e9d13.pdfIn PDF document text
    • https://wofinomedek.weebly.com/uploads/1/3/4/1/134108675/wogemazunisowaka.pdfIn PDF document text
    • https://pejopazuzaguwoz.weebly.com/uploads/1/3/2/8/132815183/ee736b022.pdfIn PDF document text
    • https://putigazabikikim.weebly.com/uploads/1/3/2/6/132682718/zerovawegoselededu.pdfIn PDF document text
    • https://ruwopevod.weebly.com/uploads/1/3/1/3/131397973/wuwelanu-metogomikafebi.pdfIn PDF document text
    • https://kulilopoxi.weebly.com/uploads/1/3/4/3/134375859/ravozupagabi.pdfIn PDF document text
    • https://xibogunef.weebly.com/uploads/1/3/1/3/131398295/aa4b19637d2e8.pdfIn PDF document text
    • https://firedisivimi.weebly.com/uploads/1/3/0/9/130969818/xoxitamusisigomuxezo.pdfIn PDF document text
    • https://lejigatoni.weebly.com/uploads/1/3/1/8/131871980/mufugefelonazifir.pdfIn PDF document text
    • https://vikumeniwexawud.weebly.com/uploads/1/3/0/9/130969440/5861064.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366366/normal_5f89bf441e2b4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368989/normal_5f8a6769320d7.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00007ab9.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00007ab9.bin)
    • https://cdn.shopify.com/s/files/1/0481/5916/2521/files/48436348296.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/9648/5277/files/kuximebumoker.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0319/9138/files/direct_speech_reported_speech_exercises.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/8304/5293/files/wazutonatonopoboreti.pdfIn PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/manual_de_bacteriologia_medica.pdfIn PDF document text
    • https://s3.amazonaws.com/tometubufimopim/apprendre_l_allemand.pdfIn PDF document text
    • https://s3.amazonaws.com/belapawerezuju/definition_of_big_five_personality_traits.pdfIn PDF document text
    • https://s3.amazonaws.com/gupuso/guzeferenoporilulejapaxox.pdfIn PDF document text
    • https://s3.amazonaws.com/petikamov/ankle_joint_anatomy.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/1023/4778/files/talking_tom_camp_mod_apk_techylist.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/5826/8833/files/harley_davidson_rocker_c_seat_options.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3134/7868/files/4801044229.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_off00007ab9.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007ab9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AB9 5340 bytes
SHA-256: ef8a1ac3bbc3449831127329be54f1f16e65a2a6659a304a5211a65a624b275d
font_01_sfnt_off00008ce7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CE7 11648 bytes
SHA-256: 21aecae918b2dac167f9083a70a04c64466a2aa25613b5c8d38fb5b28f200202