Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d4b388b8b5e681c…

MALICIOUS

PDF

45.6 KB Created: 2020-10-29 10:06:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: e893ecbbd8eb0d14c711e7128362ac3c SHA-1: 5e68ed9192c2204f1d64b655ebb631f1c14e101f SHA-256: 0d4b388b8b5e681c45903b4ea6c7de238ade66ae0f71b4d47ac75b551e5b42b9
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://cctraff.ru/pify?keyword=woodchuck+hyroller+1200+manual In PDF document text
    • https://zebamejiwan.weebly.com/uploads/1/3/4/3/134312785/f9c7b32.pdfIn PDF document text
    • https://saxexowiki.weebly.com/uploads/1/3/0/9/130969873/kuxeb_jesusageb_limurub.pdfIn PDF document text
    • https://zejibafubetu.weebly.com/uploads/1/3/4/1/134108860/pupavunedagew.pdfIn PDF document text
    • https://tugoxalimirufa.weebly.com/uploads/1/3/4/3/134310877/8d6caa0.pdfIn PDF document text
    • https://votawaxamudogop.weebly.com/uploads/1/3/4/4/134400347/wunefuvug_zixiwoz_siwofuj.pdfIn PDF document text
    • https://rezizeme.weebly.com/uploads/1/3/0/7/130775554/05209.pdfIn PDF document text
    • https://jatilesaza.weebly.com/uploads/1/3/4/3/134316516/222090.pdfIn PDF document text
    • https://manuxemewawi.weebly.com/uploads/1/3/4/4/134443751/2079667.pdfIn PDF document text
    • https://kusanogiwaxug.weebly.com/uploads/1/3/0/8/130873987/divefikap.pdfIn PDF document text
    • https://suganolorifumu.weebly.com/uploads/1/3/0/8/130814011/724d965e4.pdfIn PDF document text
    • https://xusawoji.weebly.com/uploads/1/3/0/7/130739635/wogov_wuvexalotez_disusexetoputud_dafomisosedasi.pdfIn PDF document text
    • https://jalewigevat.weebly.com/uploads/1/3/2/6/132681207/vugepidaxi.pdfIn PDF document text
    • https://fisalusul.weebly.com/uploads/1/3/4/3/134341538/tujutesufusuxe-kukixewax-fulosososug-kexizo.pdfIn PDF document text
    • https://zavomafig.weebly.com/uploads/1/3/4/3/134356936/gowexuwobuwivi.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00007300.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00007300.bin)
    • https://cdn.shopify.com/s/files/1/0485/0250/5633/files/estandares_y_expectativas_de_matematicas_primer_grado.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/3884/6359/files/2020_hyundai_elantra_bluetooth_instructions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1102/2756/files/how_to_subtract_vectors_with_angles.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/0334/5558/files/mymathlab_linear_algebra_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/8334/8162/files/three_non_living_things_in_the_environment.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2044/3045/files/17412401061.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/3502/8375/files/santa_muerte_prayer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/5520/4520/files/caterpillar_in_alice_in_wonderland_voice.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0898/1153/files/oracion_de_alabanza_al_espiritu_santo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0493/1194/0767/files/64077832902.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4944/9632/files/death_by_meeting_agenda_template.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_off00007300.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007300.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7300 5508 bytes
SHA-256: 68c238a5a76e87a820f78b1e2a3937d1a8066fd2e7581d237686c7c83bce3390
font_01_sfnt_off000085a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85A4 10312 bytes
SHA-256: d6da11f1411941e39bce9a47ea52542d5f4bbab70f83f06f4090674769175f95