Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b69888383c22d78…

MALICIOUS

PDF

56.7 KB Created: 2020-10-01 07:13:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 11d40f08a0049879164f3cf7695b1585 SHA-1: e3a1ac62a591537dfe2e6137d4a5a6dc4d3764c6 SHA-256: 7b69888383c22d784f8a81589f173c6f9516a30c8540d0bc81335f746a18ad33
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://ggtraff.ru/strik?keyword=conjugaison+etre+et+avoir+a+tous+les+temps+pdf In PDF document text
    • http://files.weenip.org.uk/uploads/1/3/1/0/131069887/0ff32.pdfIn PDF document text
    • http://janudor.yeaflicker.com/uploads/1/3/0/8/130815097/9299f9fc1.pdfIn PDF document text
    • http://jotavix.grogro.co.za/uploads/1/3/1/4/131453870/koxunumubo.pdfIn PDF document text
    • http://fewes.candellafabrica.com/uploads/1/3/0/7/130775029/75ecbb3.pdfIn PDF document text
    • http://files.cachevalleylandscaping.com/uploads/1/3/0/7/130775727/tegewolitizew-xojezuxikokadap-tukodidulirilo.pdfIn PDF document text
    • https://site-1036678.mozfiles.com/files/1036678/buxidebarabo.pdfIn PDF document text
    • https://site-1037869.mozfiles.com/files/1037869/77187448322.pdfIn PDF document text
    • https://site-1036675.mozfiles.com/files/1036675/77151557806.pdfIn PDF document text
    • https://site-1036676.mozfiles.com/files/1036676/26565640963.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/80884551140.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/7615/3244/files/framingham_train_station_commuter.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5990/2624/files/the_new_encyclopedia_of_modern_bodybuilding_francais.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1708/4839/files/itinerant_teacher.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4550/2626/files/tawejewulexadi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2390/8520/files/60922267762.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9491/7799/files/marodakamovojom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1189/9551/files/72684926601.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6150/2374/files/lesson_outline_describing_weather_answer_key.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006c00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C00 5404 bytes
SHA-256: f9fe5df6feeae76e8369fb25cbe284cc85f95e5522372c18a084d86afa4092aa
font_01_sfnt_off00007e59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E59 2268 bytes
SHA-256: 2b17894289ef4ac549ca5ccbfe538e6ebde94701791c0542cba9a71f2d67f349
font_02_sfnt_off0000886c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x886C 12236 bytes
SHA-256: 1f7cea816c2da080242e4ac2702a26c85bcda9a05ec5c4ff597a63036edc8c6b
font_03_sfnt_off0000af2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAF2E 16256 bytes
SHA-256: 4b806f6c24c883d23ee1a6e3b27a063905f58f2534f8fca8018bf7c5a7831200
font_04_sfnt_off0000c4a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC4A3 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f