Malicious PDF — malware analysis report

Static analysis result for SHA-256 c369d6a9a0abaca7…

MALICIOUS

PDF

38.6 KB Created: 2020-08-17 07:50:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d00dbe58ff8ff2185491dbcf747eb116 SHA-1: 7c528c2d015d9f19e42a91039eb3f6ef1fb9a05c SHA-256: c369d6a9a0abaca7a24f3aeedf5743bfc9219ef232b58ba508042191e5217973
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to a redirector infrastructure associated with SEO spam and phishing lures. The primary redirector URL is https://ttraff.cc/pify?keyword=betternet+vpn+proxy++for+android, which is designed to trick users into downloading potentially unwanted or malicious software. The ML classifier strongly indicated maliciousness, and the presence of a link farm further supports a malicious intent.

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=betternet+vpn+proxy++for+android In PDF document text
    • http://files.mariamirojohnson.com/uploads/1/3/2/7/132740778/fcc5ccd4427dc.pdfIn PDF document text
    • http://nixubut.bookworldtravel.com/uploads/1/3/2/8/132815296/jalufaxog.pdfIn PDF document text
    • http://files.laocdb.com/uploads/1/3/1/0/131069879/zixezaxorevol.pdfIn PDF document text
    • http://files.cosmicsquirrelceramix.com/uploads/1/3/1/0/131071243/wuberiwutomaja.pdfIn PDF document text
    • http://files.coachseril.com/uploads/1/3/0/8/130873908/4766831.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/1/0440/9311/2472/files/negixarasebigoxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9427/8293/files/89841865561.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6471/1575/files/imo_video_call_messenger_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4361/8965/files/28851357681.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lonuxifipepi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7829/5450/files/41851984417.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9162/4096/files/47869907246.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5326/0706/files/12172184180.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/87745409623.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3529/5905/files/guided_writing_linking_words.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4545/2967/files/74579166371.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6633/6167/files/40945989486.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_off0000568e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x568E 5104 bytes
SHA-256: 25810ee586d20d1d944191aa0b77dca14ba763f7471e3afcda7a6dd62c74e984
font_01_sfnt_off0000680b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x680B 10580 bytes
SHA-256: 78b6c10c3c5ffbc0da700c23cefa2a39c5170fe54788dfb5544b7df68e36ec78

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