Malicious PDF — malware analysis report

Static analysis result for SHA-256 a29ada98edbefcd5…

MALICIOUS

PDF

37.5 KB Created: 2020-10-15 07:07:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 17ba93988e0d81e08b4dc318fd6a6344 SHA-1: 7fab22c0d9c1ba28329414a09b5a160e26af606c SHA-256: a29ada98edbefcd562bc5d77bf9d290ac1377d2a03651476fae00fb75496c5f0
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/pify?keyword=popcorn+time+sh+apk In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366319/normal_5f876a54d6ec2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367311/normal_5f879fb86a34b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366957/normal_5f8769db6d680.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366408/normal_5f87bc666d0b9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366395/normal_5f87a026d4c15.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366389/normal_5f87596fea60e.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/1/0504/3050/9254/files/filijuzuzamovuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/1222/5694/files/17079728658.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0268/8604/5889/files/61392932038.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/9878/6971/files/voduzipol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0476/9021/9686/files/andrew_dobson_princeton.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d1cddfda-d560-4290-81c0-f79719c500b3/13269369851.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/019c5e88-9094-4090-a2aa-ab94cdd2aad9/30000701723.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/1080/4890/files/the_dharma_of_star_wars.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/1296/3482/files/spark_performance_tuning_tools.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/2287/9389/files/nes_physical_education_study_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f231d7dd-5065-4fb3-9fd5-aa6b4e9c797f/fezefevota.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/62d841c9-dc6a-4e91-ac17-fd4965bf77ce/gezakelam.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_off000055b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x55B3 5208 bytes
SHA-256: 768b30d1152cb2744e1f6df60194940e5a3c591c2c095c072c1c55123084cc8a
font_01_sfnt_off0000672d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x672D 9924 bytes
SHA-256: cc2f117dd18d33a147f44a4b2e9dee928871c792858c5ebb2c7edee1095cf6bd