Malicious PDF — malware analysis report

Static analysis result for SHA-256 2483d91e1798b415…

MALICIOUS

PDF

40.7 KB Created: 2020-08-19 14:18:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0b57f69373f1afc5ab9430f80c163ec3 SHA-1: f13a00db65025e92d17068395541574e176e555b SHA-256: 2483d91e1798b41541b3204409bbb30058b3dc6f28152a4071fdab2b84648e5f
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains text suggesting it is a 'slope intercept form worksheet algebra 1', which is likely a lure. The primary malicious URL identified is https://ttraff.com/pify?keyword=slope+intercept+form+worksheet+algebra+1, which redirects to other benign-looking Shopify links, indicating a link farm and redirector strategy. The ML classifier strongly flagged this PDF as malicious.

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=slope+intercept+form+worksheet+algebra+1 In PDF document text
    • http://magimi.acsksolicitors.com/uploads/1/3/0/7/130738964/5144807.pdfIn PDF document text
    • http://files.heatherbeardsley.com/uploads/1/3/2/8/132815123/38ee75.pdfIn PDF document text
    • http://muviven.maryobodzinski.com/uploads/1/3/1/0/131070493/d935335.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/1/0432/0660/7012/files/26162377595.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1411/1903/files/89741858858.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9452/3552/files/dump._dump_asap_ferg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3575/4650/files/39427812802.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9050/8960/files/93545564664.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3330/4993/files/pudiwavapiwefafuxa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2177/7570/files/93843905419.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8071/1325/files/sifinozuvisumejum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2388/2664/files/mavafafekatumabasuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3595/0236/files/kuxepavajowovi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6432/8345/files/materi_bahaya_narkoba.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_off00005f50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F50 5880 bytes
SHA-256: f5cf92ac6d75b75c76335453d043b4289321ec8fd4d30da3d1c7192c2877db6e
font_01_sfnt_off00007339.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7339 10316 bytes
SHA-256: 538c9b5b8918ab433eed9718881ce331ef985fda069731a728e4760b70e90452

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