Malicious PDF — malware analysis report

Static analysis result for SHA-256 5556ea01eea57d84…

MALICIOUS

PDF

45.6 KB Created: 2020-10-15 01:09:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 98d2324e18c0016f669287ccd658077a SHA-1: e365133fcb797ebf206d52b53b477948d2ec0b59 SHA-256: 5556ea01eea57d845288aff575672c243d0da620c77de1a9e7488e9419d5a0f0
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://gettraff.ru/123?keyword=weight+loss+diet+and+exercise+plan+pdf In PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/5337016.pdfIn PDF document text
    • https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/velowo_dakemolaku.pdfIn PDF document text
    • https://gemaxudemaxepeb.weebly.com/uploads/1/3/1/0/131070646/lerunodejokawuloner.pdfIn PDF document text
    • https://babikovinemixe.weebly.com/uploads/1/3/1/8/131856339/8d113dbc76e.pdfIn PDF document text
    • https://jawowigo.weebly.com/uploads/1/3/0/7/130774982/296d838f50c724.pdfIn PDF document text
    • https://jedarixires.weebly.com/uploads/1/3/0/9/130969076/2766802.pdfIn PDF document text
    • https://vozutadisifik.weebly.com/uploads/1/3/1/4/131483249/074323a3.pdfIn PDF document text
    • https://site-1042711.mozfiles.com/files/1042711/ginifi.pdfIn PDF document text
    • https://site-1042446.mozfiles.com/files/1042446/tutagemuzobes.pdfIn PDF document text
    • https://site-1036945.mozfiles.com/files/1036945/jemuzirow.pdfIn PDF document text
    • https://site-1040771.mozfiles.com/files/1040771/wonufenigaluvinaw.pdfIn PDF document text
    • https://site-1037094.mozfiles.com/files/1037094/rugiviloviludojo.pdfIn PDF document text
    • https://site-1040129.mozfiles.com/files/1040129/mazizolagilexesavikos.pdfIn PDF document text
    • https://site-1039669.mozfiles.com/files/1039669/50872436463.pdfIn PDF document text
    • https://site-1042286.mozfiles.com/files/1042286/66877660094.pdfIn PDF document text
    • https://site-1039438.mozfiles.com/files/1039438/35938779408.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/1/0502/1810/7042/files/seal_team_666.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/4367/1194/files/difference_between_formal_and_informal_report_writing.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/6466/7541/files/1043158316.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/9108/5462/files/balkan_mathematical_olympiad_2016_problems.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3889/1419/files/66351533762.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5353/0782/files/google_chrome_driver_64_bit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/0403/7790/files/34308976133.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/7888/4759/files/samsung_steam_dryer_not_heating.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_off000073ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73EC 5496 bytes
SHA-256: 9c0fe9adb3c406348ecb89227d88051f94be256833077ccfc0e40a2681764535
font_01_sfnt_off000086a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86A9 10076 bytes
SHA-256: fac62d4228f2da6166951cc581dc08caff9c6b34d347a0830f809a09368e0baf