Malicious PDF — malware analysis report

Static analysis result for SHA-256 72188290bd92e9cb…

MALICIOUS

PDF

40.8 KB Created: 2020-08-06 13:32:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f8911cd31b258bb3655a18014eb722fc SHA-1: ae40ba3cc50da04846865e76b27ada811b0d1f79 SHA-256: 72188290bd92e9cb2a4edf098d2fda527a2a4a59f6ef9283177ca2b3132f9dbe
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to a redirector service (ttraff.com) which is flagged as malicious. The document body and embedded links suggest a lure to download further content, likely malicious, under the guise of information about an 'Amada bending machine'. The presence of a large number of external PDF links indicates a link farm SEO tactic, often used to obscure malicious destinations.

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/pify?keyword=amada+bending+machine+pdf In PDF document text
    • http://files.mylearninginwolfcreek.ca/uploads/1/3/2/6/132681219/fobufuru.pdfIn PDF document text
    • http://bopale.ntspruikle.com/uploads/1/3/1/8/131856772/mijufekanuzovu.pdfIn PDF document text
    • http://files.naturecoastdecorativeartists.com/uploads/1/3/1/6/131606035/8416c9e4bb.pdfIn PDF document text
    • http://taroged.grotonalliance.org/uploads/1/3/1/0/131070718/3b0ba0.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2548/9320/files/56614914368.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9848/9503/files/automotive_technician_resume.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3584/5017/files/84640253257.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5741/3270/files/kegefumibabewematu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7460/7514/files/zegapidemoledoxesixe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7627/2796/files/zorajalagubetujujukife.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5276/9192/files/hollywood_hd_video_song_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5744/6050/files/latotexuzovevoxejew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1881/1552/files/zuxafemif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3451/6376/files/74952727205.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9073/0398/files/fuxesadajajatatanaxokeb.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
    • http://www.gnu.org/licenses/gpl.htmlIn PDF document text

Related samples 3

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004835.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4835 5392 bytes
SHA-256: 7e519a60780515144b4db408907245e1795ef8b17731d0f387be142bd054487f
font_01_sfnt_off00005a5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A5E 9400 bytes
SHA-256: e1c883cb1db6237636f0e83ccb5a7cb45e4f279d5d351f241f190ab71248f324
font_02_sfnt_off000074db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74DB 9820 bytes
SHA-256: acfae52b7f22560456d834dd261362143ae6c26be7156f5d11b5f8d189c79c31

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