Malicious PDF — malware analysis report

Static analysis result for SHA-256 106d1a63a26a6518…

MALICIOUS

PDF

67.3 KB Created: 2020-10-03 00:50:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: c655c19f1290e30523c699f4b700182e SHA-1: 876c27afe4b7b23e7087d10675d8da9216f6abfe SHA-256: 106d1a63a26a6518a3781e68d089a7056e0c2a71973990fbece6471bae1286cf
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/strik?keyword=bully+anniversary+edition++highly+compressed In PDF document text
    • http://files.glorytourssalalah.com/uploads/1/3/1/8/131856392/11416cf14.pdfIn PDF document text
    • http://files.georgipetroff.com/uploads/1/3/1/4/131407292/1844654.pdfIn PDF document text
    • http://files.unleashedlure.com/uploads/1/3/1/1/131164174/977232.pdfIn PDF document text
    • http://files.barefootcustomknives.com/uploads/1/3/1/3/131398143/zaviri.pdfIn PDF document text
    • https://site-1037085.mozfiles.com/files/1037085/97281139237.pdfIn PDF document text
    • https://site-1037843.mozfiles.com/files/1037843/24893288945.pdfIn PDF document text
    • https://site-1036684.mozfiles.com/files/1036684/28319005724.pdfIn PDF document text
    • https://site-1036816.mozfiles.com/files/1036816/71053350518.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • https://cdn.shopify.com/s/files/1/0469/9265/4488/files/josawomij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7637/6983/files/el_mesias_united_methodist_church.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0495/1434/8712/files/29828501788.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/1631/3768/files/fitbit_hr_user_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/2009/5135/files/38851107720.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0469/0558/9920/files/mision_vision_objetivos_y_valores.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1194/6134/files/62970340273.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://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://www.gnu.org/licenses/gpl.htmlIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006e07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E07 6676 bytes
SHA-256: 8c7d19c5f97f84c488b30f3d1e2415ab561a2bff7dbc97f4405e82db792a7af7
font_01_sfnt_off00007edd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EDD 5700 bytes
SHA-256: 1332cc2c51a901923059f790a5ae2c1a0e52120d1867df684d5acd4e8e7edd2b
font_02_sfnt_off00009221.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9221 10460 bytes
SHA-256: b3055c30f29ea1ebed4d9c561fca637aac68293be6160754164c95ccf3742fa8
font_03_sfnt_off0000b2b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB2B5 5852 bytes
SHA-256: 070190071500e4e782f35bfd755afae89b66324ef3097a980fd68c75fb9893f1
font_04_sfnt_off0000c16f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC16F 10900 bytes
SHA-256: 2a5983cd2f8a9498e8e15f00d0ebc25f95c32a3402518032dbdee6a404f3bc11
font_05_sfnt_off0000e6df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6DF 16872 bytes
SHA-256: 7c4da686741b083e83d4acda1397a3b49f8b4aaa624f2809f6db45a7c15c3f55