Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd57b5da554f985d…

MALICIOUS

PDF

47.7 KB Created: 2020-07-24 06:30:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-09-07
MD5: 75cd9ceea929f84c88149dd06fdd3fcb SHA-1: 1e0f3df68921d45357282f251a519a960d4d6bca SHA-256: fd57b5da554f985d5b8c8950f32ae71b11721d747e2ed69a87003409bf22ec44
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.com'. This indicates the document is designed to redirect users to malicious infrastructure. Additionally, a PDF link farm heuristic suggests the document is part of a larger SEO manipulation scheme to distribute malicious content. The embedded URLs and the document's structure suggest a lure for users seeking specific information, likely to facilitate phishing or malware delivery.

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/wb?keyword=sony%20rx100%20iii%20manual%20download In PDF document text
    • http://files.reneeleaberger.com/uploads/1/3/0/8/130873943/5979147.pdfIn PDF document text
    • http://files.snowtroopers.net/uploads/1/3/1/3/131381804/guvubo.pdfIn PDF document text
    • http://files.catherinebutlerart.com/uploads/1/3/0/7/130776054/xupuwerepitexud.pdfIn PDF document text
    • http://files.landmarkmanaged.com/uploads/1/3/0/8/130874672/nolemin.pdfIn PDF document text
    • http://files.ectacfl.net/uploads/1/3/0/7/130739593/1102124.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/1/0429/2853/7753/files/31188525157.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0505/8976/files/6652634333.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6694/9786/files/ferageroloxev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8774/9525/files/20231003148.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8845/3533/files/22149697989.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4022/6984/files/9460858232.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6636/8935/files/fabosotexuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7301/1863/files/pejorinojuse.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4080/6824/files/37260930470.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4339/6506/files/noluwix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/3537/0407/files/55577354072.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1905/7822/files/worerapujudog.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 8

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_off000071ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71EA 5036 bytes
SHA-256: 63ceafaadd0f503a7794d1fa0f2caa548d95b46074b1294ceaf92f6afcd3394c
font_01_sfnt_off000082e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82E6 15328 bytes
SHA-256: 2c1c19f140fda367eb85abb57fccf40a16d3a29851398c982b0e7ced8f112701

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