Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7c2e44173d3ab16…

MALICIOUS

PDF

66.0 KB Created: 2020-10-25 20:24:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 6e0d04a752df0e57d5102e4c783aaab9 SHA-1: 48b57ad825a42c6d54b745293b5d11f21d07490c SHA-256: e7c2e44173d3ab166b4ff65d667e86b477d6ddd8025a9cd6896fd2c620c170ba
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/123?keyword=plotting+points+in+the+first+quadrant+worksheet In PDF document text
    • https://xumabilere.weebly.com/uploads/1/3/1/1/131163638/kofuduzuli-pekuvusorola.pdfIn PDF document text
    • https://wajiresejepo.weebly.com/uploads/1/3/0/7/130774962/47c4a8cfc698.pdfIn PDF document text
    • https://juwimifabofif.weebly.com/uploads/1/3/4/3/134369341/1955096.pdfIn PDF document text
    • https://sikisesuleze.weebly.com/uploads/1/3/4/4/134445421/1828522.pdfIn PDF document text
    • https://koxoganonigowup.weebly.com/uploads/1/3/1/4/131408343/voxakeketexotikuru.pdfIn PDF document text
    • https://zoveponezewuda.weebly.com/uploads/1/3/0/7/130738822/pizebiguwevekom.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00008b71.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00008b71.bin)
    • https://cdn.shopify.com/s/files/1/0498/2915/0882/files/movojajup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0477/3812/6492/files/arte_griego_antiguo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/5349/3655/files/tevelegusuxirajojinan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/2740/6232/files/89484920368.pdfIn PDF document text
    • https://s3.amazonaws.com/dotivaf/14999781124.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/697b1dd7-161a-404b-8926-a8fa06a269f7/94098544725.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2ed733ca-4bb7-49d0-ae76-a6493d17d598/xumefexodizamesefut.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3b5c8988-83cb-4a1c-bc19-1abf03cd473f/86511742895.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/59c8f96c-cde1-4a67-b9fd-f3978fdff040/xijasoxofamorirugo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/1688/6678/files/audiocodes_mediant_500l_configuration_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/6180/4693/files/purolator_oil_filter.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0495/9744/8355/files/poema_para_enamorar_a_un_hombre.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4673/1930/files/97704206608.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/8167/7000/files/android_app_for_apple_airpods.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://dejavu.sourceforge.netIn extracted file (stream_006_off0000d7fd.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (stream_006_off0000d7fd.bin)
    • http://scripts.sil.org/OFLIn extracted file (font_00_sfnt_off00008b71.bin)

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_006_off0000d7fd.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0xD7FD 20176 bytes
SHA-256: 86d2e04ead087619a71649fb96879126cd17c215c5babb2abe0b20928f67147a
font_00_sfnt_off00008b71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B71 5588 bytes
SHA-256: 598914dadcb10468335922207f01355af46bb0f777ff2308f2a7369161ff04f4
font_01_sfnt_off00009e6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9E6A 3824 bytes
SHA-256: b2901d6bfabddee072a0ebdc721deafd6c03301f596a8a5714928d8da2ea15ed
font_02_sfnt_off0000ad95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAD95 15048 bytes
SHA-256: 31dbc11c93de33df7f7a365629ffe457edeacc2d0f987791c2ee896b7781445d