Malicious PDF — malware analysis report

Static analysis result for SHA-256 59d794184d1f0a51…

MALICIOUS

PDF

50.4 KB Created: 2020-10-14 22:08:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 6984d96adbf911243d3c78a5c0a8eb11 SHA-1: e379a17629b30cb75e6d65e8b77bba44d3d2e6c4 SHA-256: 59d794184d1f0a51f7be6c9d9e953227207a9bf9555c414a577ff7104da225c5
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.link/pify?keyword=graveyard+keeper+steam+guide In PDF document text
    • https://xojerajap.weebly.com/uploads/1/3/1/3/131384359/2122744.pdfIn PDF document text
    • https://kupugaxome.weebly.com/uploads/1/3/0/9/130969415/3582242.pdfIn PDF document text
    • https://jatorogerujew.weebly.com/uploads/1/3/2/7/132710569/1302795.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/kadijamiruvinugeno.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366010/normal_5f86f5d59d3e4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365653/normal_5f86fc71db801.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365639/normal_5f8737179e145.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366028/normal_5f8717f451d48.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365542/normal_5f872461a42ea.pdfIn PDF document text
    • https://site-1039646.mozfiles.com/files/1039646/sizusujixaganotilij.pdfIn PDF document text
    • https://site-1038770.mozfiles.com/files/1038770/topekosimuvanawuliv.pdfIn PDF document text
    • https://zoxuzuxebexot.weebly.com/uploads/1/3/0/9/130969059/mukobuf.pdfIn PDF document text
    • https://keniwuki.weebly.com/uploads/1/3/1/4/131483234/sokilijaw.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/gizoveg.pdfIn PDF document text
    • https://fijojonibiw.weebly.com/uploads/1/3/2/6/132681787/613a711ec7ef.pdfIn PDF document text
    • https://jufaxexave.weebly.com/uploads/1/3/0/7/130775513/wikemowewoladoxuso.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/1/0500/4489/5392/files/gamelurijoxumem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7565/6097/files/commemorative_speech_about_mom_outline.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0076/5336/files/lazor_wulf_vince_staples.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/4075/3822/files/56884099507.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/9548/9189/files/crayfish_dissection_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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000772f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x772F 4496 bytes
SHA-256: ba3ba010bb606234b690df4bf31192a927b7f30e39bf63239ad6a579bbb19f27
font_01_sfnt_off000086f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86F2 5504 bytes
SHA-256: a2d6de4187dd1097d8f4177c05f5600ef79a6f18c337efc84b40cb5fca6317d1
font_02_sfnt_off000099b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x99B1 9952 bytes
SHA-256: edd5b7d17c2064163e90bf300247640e6c87359a9009682634d9d4616b433ac4