Malicious PDF — malware analysis report

Static analysis result for SHA-256 a53be245af6eb70f…

MALICIOUS

PDF

40.1 KB Created: 2020-08-14 23:05:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f9ebaaf38c49bef8faaf14d3f5880a31 SHA-1: 05189d23b5873ac561aebb168aa0eb6ce6dc919f SHA-256: a53be245af6eb70fc4818595a4cb01760668041ab3f65e0a88be5c5d93655024
194 Risk Score

Malware Insights

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

The PDF contains a mass of external links, with one critical heuristic firing indicating a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text related to 'sales forecasting excel template free' and the malicious URL. The primary attack pattern involves luring the user to click on a link that redirects to malicious content, likely for phishing or malware distribution.

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/pify?keyword=sales+forecasting+excel+template+free In PDF document text
    • http://files.charleswakefieldartist.com/uploads/1/3/0/9/130969577/db9b18f31.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/1/0431/2819/3184/files/pdf_splitter_and_merger_free_download_for_windows_7.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0134/7226/files/amar_chitra_katha_bengali_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6788/2134/files/remajebewigajezupuxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5952/8355/files/guitar_vst_plugins.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0744/3103/files/zotokogukope.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2750/4024/files/1003732494.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4059/5352/files/56317563286.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1754/3588/files/ludarajoxotutavufixo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7140/6234/files/wozojajufawurenaxiper.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2920/8992/files/nirimufirisowevezukamok.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 2

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_off00006264.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6264 5508 bytes
SHA-256: d6d82847c3cc9687630953dd59ac7adeb0009f02784ee6e9a163516bfdf602fb
font_01_sfnt_off00007507.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7507 8996 bytes
SHA-256: 08163e278bfc6dceb6a12b109b2e6e4d8dfea6622c3caa342ab95451a451cc62

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