Malicious PDF — malware analysis report

Static analysis result for SHA-256 4440955dcee540ad…

MALICIOUS

PDF

42.9 KB Created: 2020-08-24 06:37:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7909c856ef35a098c905ff1abbf5ca5e SHA-1: 508cacfc8a61cd75f563db13237db5f43759d0ab SHA-256: 4440955dcee540ad0260d7a8f1487b498dea9448616abcf5ae2e5ee6b40570d8
234 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded links, with one critical heuristic firing indicating a link to known malicious redirector infrastructure. The document body, though heavily corrupted, contains text related to 'The 5th wave pdf book' and the URL 'https://ttraff.cc/pify?keyword=the+5th+wave+pdf+book', suggesting a lure to a potentially malicious site. The presence of numerous external PDF links also points towards a link farm or redirection strategy.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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=the+5th+wave+pdf+book In PDF document text
    • http://vesatize.waiaholenurserygardenandfloralgifts.com/uploads/1/3/2/6/132695675/xixezegoraputu_vudafol_fediza_xanubozore.pdfIn PDF document text
    • http://zifefuv.togetherincounselling.co.uk/uploads/1/3/2/3/132302939/nabarafasaromep.pdfIn PDF document text
    • http://files.thighsofsteel.com/uploads/1/3/0/8/130873839/kakorimulefujobe.pdfIn PDF document text
    • http://files.leicester.church/uploads/1/3/2/7/132712015/7922920.pdfIn PDF document text
    • http://files.jwaycott.com/uploads/1/3/1/3/131380767/lanitokuxa.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/1/0430/2356/4957/files/41470266122.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0661/3912/files/nidogigolorovog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7529/7689/files/answer_and_counter_petition_for_paternity.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/pizegavegip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0389/4171/files/kuliligagajinorixad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7773/0464/files/gonodolavu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2398/3015/files/varidudisaxuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/2552/5910/files/9295999497.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0726/2367/files/menadovuxodudaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7753/2824/files/nizonuxegefasixepate.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6808/7711/files/arjun_reddy_pictures_hd.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5425/1670/files/41795475879.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3754/1031/files/92313706134.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1781/3661/files/81540914465.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000069c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69C1 5252 bytes
SHA-256: edef1044b26ef1e60071121c6090a4e9ff612060fc764985c8283b33512f9478
font_01_sfnt_off00007bb7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BB7 10076 bytes
SHA-256: 7c23449b67724d024f059ddfdc8ee286ce3f1684b6533264d785b3c93fd14160