Malicious PDF — malware analysis report

Static analysis result for SHA-256 7204d2f9ccb56c3a…

MALICIOUS

PDF

44.7 KB Created: 2020-07-20 05:45:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-09-04
MD5: 765b25c5590370cf0e7ddda8bd322871 SHA-1: e77515eae6bfa9a6a146fde7cca293588422ba9f SHA-256: 7204d2f9ccb56c3aab540bb1ff4c4d1e16ea3b3f9530ced3f18f36e83049f440
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains a lure related to an air compressor manual, but its primary function is to redirect the user to a malicious URL. The document is heavily linked to SEO spam and redirector infrastructure, indicating a phishing or scam attempt. No scripts were extracted, but the embedded links are the main vector for malicious activity.

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.cc/wb?keyword=husky%20h1820f%20air%20compressor%20manual In PDF document text
    • http://files.markparadispolitics.com/uploads/1/3/0/9/130969993/nuvomejemesu.pdfIn PDF document text
    • http://files.kenna-kitchen.com/uploads/1/3/2/6/132696155/siwojuridefe_ditalopu.pdfIn PDF document text
    • http://files.purnamasalura.com/uploads/1/3/2/7/132740519/ketupelanozuvu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://wimorop.files.wordpress.com/2020/07/58410362506.pdfIn PDF document text
    • https://fesigol.files.wordpress.com/2020/07/37598531643.pdfIn PDF document text
    • https://gozuwej.files.wordpress.com/2020/06/ravepedo.pdfIn PDF document text
    • https://wifomijelob.files.wordpress.com/2020/07/65582976278.pdfIn PDF document text
    • https://bolekadeva.files.wordpress.com/2020/07/lofedakudiwej.pdfIn PDF document text
    • https://xawuwerix.files.wordpress.com/2020/07/74381543334.pdfIn PDF document text
    • https://vomaxepe.files.wordpress.com/2020/07/dibibufisugefit.pdfIn PDF document text
    • https://pitolutup.files.wordpress.com/2020/06/59140232607.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9635/0624/files/fikojogi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1905/7822/files/jojilafukufupugokuxasux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2521/1296/files/pokitolen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/37144816260.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/86593634255.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8451/3444/files/68457538959.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8424/3351/files/62437879911.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 3

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006f67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F67 5704 bytes
SHA-256: 6476250d607c741ba9668659e8ee45be41cd97c281b4bf143db0d22ec1b3057a
font_01_sfnt_off000082a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82A1 10216 bytes
SHA-256: 5ee1978cff671e4b1be93016abb8e91031dfc42cec682c7cf54cbd7d7f877b22

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