Malicious PDF — malware analysis report

Static analysis result for SHA-256 33535a5595f42dd8…

MALICIOUS

PDF

48.1 KB Created: 2020-08-09 08:21:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: efe11b909d2a97f50259ddf7cbcd2199 SHA-1: 3d4f84aacea2dba0fd48766f7b5faade5c5da68f SHA-256: 33535a5595f42dd882686d64bab2dd7bb02cdf4f636058adc614e63073904329
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://ttraff.com/pify?keyword=ls+command+in+linux+with+examples+pdf In PDF document text
    • http://files.frocksunderground.com/uploads/1/3/2/6/132681863/gibazit.pdfIn PDF document text
    • http://files.popconshop.com/uploads/1/3/0/7/130740512/goxiwel-jusobamu-gazopujaful-dibuser.pdfIn PDF document text
    • http://files.thelivbits.com/uploads/1/3/0/7/130738821/nedoxurikidewa.pdfIn PDF document text
    • http://files.manifoldwisdom.org/uploads/1/3/0/8/130874253/439821.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/1/0428/8364/5599/files/60162029597.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9113/2567/files/pagojezufoxexatekolagoza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1725/6603/files/27105018188.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/4029/8392/files/69864783362.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2536/7194/files/wdw_animal_kingdom_map.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/79894841610.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4364/2773/files/6953370591.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7834/4085/files/ridareteloxikirovuvi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2783/0696/files/rights_and_duties_of_company_auditor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8026/9477/files/vuxowolasivezupimidepapis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6277/8263/files/sisufalosapufo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6914/5241/files/72201789045.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0522/2822/files/70970727839.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sujaxitedidubabupopivup.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

Related samples 6

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006607.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6607 5284 bytes
SHA-256: 5941e32b83ea4cafb6d672d68f306b6caf8e71104a2dbb73a3d4853c904abd2d
font_01_sfnt_off000077e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77E9 14328 bytes
SHA-256: bc311987fc56cbcb569411922b4f7c5a814e6f6e9249a3064df6f9ebd0c822be
font_02_sfnt_off0000a544.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA544 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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