Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7547a6df161086e…

MALICIOUS

PDF

38.8 KB Created: 2020-08-19 20:09:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8c9ee77eea3e54ef93c6e1a15ae83590 SHA-1: 7e4d19554a05b6933388fc4916bfa731cb5d090d SHA-256: f7547a6df161086e5cb6a9e9b4c5b13e21f3c3c985d752aa724239628bf6859e
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external PDFs hosted on various domains, including a known malicious redirector. The primary lure appears to be "calling card format design", suggesting a social engineering pretext to entice users to click the links. The heuristic firings indicate the document is designed to redirect users to malicious infrastructure.

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=calling+card+format+design In PDF document text
    • http://files.ozarkfamilyoperacompany.com/uploads/1/3/0/7/130775368/690eb2ed035fab.pdfIn PDF document text
    • http://files.kansascityamprepair.com/uploads/1/3/1/3/131398141/lajibovejup.pdfIn PDF document text
    • http://rakimot.drtaoka.com/uploads/1/3/1/0/131070858/1523254.pdfIn PDF document text
    • http://files.ncasc.net/uploads/1/3/1/4/131437106/visavil-jinizuwuna.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/1/0428/9105/1161/files/fowuverokugoveka.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7895/9775/files/prism_video_converter.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8107/0747/files/calendario_julio_2020_para_imprimir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/0828/4056/files/56462027036.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5341/6601/files/84011322587.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9480/9512/files/bee_swarming.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3418/0769/files/38145253790.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8901/6472/files/graham_fuller_arap_bahar_ve_trkiye.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3799/8754/files/gatejumefapowutusur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8136/7712/files/tezeboxubibadi.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_off00005a98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A98 5248 bytes
SHA-256: 30c84997c46f27de3126bd6fb9c39af2a92ed85400d6f840b304b022af393289
font_01_sfnt_off00006c54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C54 10024 bytes
SHA-256: ad1520c0c6318cdd180c012438ac55e98c6523be1a42db3ca84f1b98af08f394

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