Malicious PDF — malware analysis report

Static analysis result for SHA-256 8832227a3418920d…

MALICIOUS

PDF

46.9 KB Created: 2020-08-05 03:49:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a8a6baef1e2d366408fd0902b321227b SHA-1: 5872eb244bfa4233fa9d333a8591634bb899e0f0 SHA-256: 8832227a3418920d45c8fdb81a792216acdfaa79cb263b1b1afe83c60e30c6f9
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links, many pointing to a redirector service (ttraff.com) that is flagged as malicious. This suggests a phishing or scam attempt, likely disguised as a free download lure. The ML classifier strongly supports the malicious verdict. No scripts were extracted, but the embedded links are the primary attack vector.

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=buku%20diplomasi%20indonesia%20pdf In PDF document text
    • http://files.annemcallisterart.co.uk/uploads/1/3/1/4/131437980/0d7d9c5b8.pdfIn PDF document text
    • http://wadog.chrisnorrisart.com/uploads/1/3/1/6/131636719/gadok-bugerix-dudutomadododov.pdfIn PDF document text
    • http://files.rhythmsofawoman.com/uploads/1/3/1/8/131871625/poxexakoluwemamo.pdfIn PDF document text
    • http://files.hospitalinfrabiz.com/uploads/1/3/1/4/131453393/8531905.pdfIn PDF document text
    • http://files.lightsoutlet.net/uploads/1/3/1/6/131606092/danalub-nowevewunumuz-pigebesibebo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1701/1353/files/wokopepokipobikapasiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0052/9049/files/jujiwudinokipawujomu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8406/3654/files/56514312477.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9900/4827/files/89944801249.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7341/3028/files/telasewebikum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7432/2586/files/43700587788.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0349/5071/files/accidental_prime_minister_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3502/5831/files/48462480911.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7389/6602/files/visudimukepeselinalulaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6397/5835/files/21367148888.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2399/8874/files/serisepipusukopewozuruzeg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1339/7924/files/50563140721.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6440/0798/files/955417469.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0609/9605/files/kujutobijipopek.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006c1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C1F 5008 bytes
SHA-256: bc1dcd68ad5d90f5aa48f9aa08b91b9f00433df2e8a0807785b2dd0dd9efcb7a
font_01_sfnt_off00007d0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D0E 10368 bytes
SHA-256: 81672eebd308162d5b4340395e21b0b3881800d396d7cb7a33220274d6202459
font_02_sfnt_off0000a036.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA036 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71