Malicious PDF — malware analysis report

Static analysis result for SHA-256 add0f64d384c19e2…

MALICIOUS

PDF

41.3 KB Created: 2020-05-13 01:41:18 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2026-05-08
MD5: 802ae249d10b26266c315c291fd1daa5 SHA-1: fd6d886d4d261996d888dd3bad28e93b6215d718 SHA-256: add0f64d384c19e274aaf5cce3f2f50abe42e0e84acc9c8dbee495568898cfca
136 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 User Execution: Malicious File

The PDF document contains a large number of external links, many of which point to other PDF files hosted on similar domains. The document body text and embedded links suggest a lure for downloading an "APK" file, likely a malicious application. The PDF_SEO_LINK_FARM heuristic indicates a mass linking strategy, common in SEO poisoning or phishing campaigns designed to drive traffic to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 5

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 http://carlosdia.com/uploads/1/3/0/4/130489157/130489157.html#thumbnail+maker+and+banner+maker+premium+apk PDF link annotation
    • http://assetinvestmentgroupllc.com/uploads/1/3/1/4/131407572/rusiloseju_gatelo_fatedeno_momitilosuzeme.pdfIn PDF document text
    • http://rentasonassembly.com/uploads/1/3/0/6/130621846/fukabomevozerovewo.pdfIn PDF document text
    • http://prettyinwhite.net/uploads/1/3/0/4/130489172/2649630.pdfIn PDF document text
    • http://cowle.de/uploads/1/3/1/4/131408572/tojakalizawotifelo.pdfIn PDF document text
    • http://dyangconcept.com/uploads/1/3/0/3/130379182/f8efafc7d39311.pdfIn PDF document text
    • http://google-21.com/uploads/1/3/1/3/131379206/3170789.pdfIn PDF document text
    • http://caninefitnessandexercise.com/uploads/1/3/0/7/130738542/tikosaze.pdfIn PDF document text
    • http://therealhousewivesofloudouncounty.com/uploads/1/3/0/5/130543772/e6591fe382ea.pdfIn PDF document text
    • http://valetcreditrepair.com/uploads/1/3/1/4/131453256/pujemudej.pdfIn PDF document text
    • http://shanghaishopper.com/uploads/1/3/0/4/130476053/koxovodeku.pdfIn PDF document text
    • http://barberderekrocks.com/uploads/1/3/1/3/131382982/8739544.pdfIn PDF document text
    • http://madelineberger.com/uploads/1/3/0/7/130776607/tunod.pdfIn PDF document text
    • http://olivapizzaandgrill.com/uploads/1/3/0/6/130621786/neremokawafu.pdfIn PDF document text
    • http://esteticaguilartes.com/uploads/1/3/0/5/130550789/zetixelifok.pdfIn PDF document text
    • http://littlepennyblog.net/uploads/1/3/1/3/131398431/4528559.pdfIn PDF document text
    • http://integratedmedicalreferrals.com/uploads/1/3/0/7/130775652/8b7f8e2080c35.pdfIn PDF document text
    • http://patriotstacticalacademy.org/uploads/1/3/0/3/130323332/xesawazuboso_jebikutazok.pdfIn PDF document text
    • http://seven7fourteenboutique.com/uploads/1/3/0/7/130739654/xiget_lifujodelewu_pupajadenonil.pdfIn PDF document text
    • http://beyond-comfort-zones.com/uploads/1/3/1/3/131398102/b2470.pdfIn PDF document text
    • http://theforagedfern.com/uploads/1/3/0/7/130738622/ximanisakarexul.pdfIn PDF document text
    • http://hayleymckay.com/uploads/1/3/0/2/130272478/ninuviw.pdfIn PDF document text
    • http://talents2work.org/uploads/1/3/1/4/131454731/1f9c7c1b69186.pdfIn PDF document text
    • http://give-back-ac.com/uploads/1/3/1/3/131379726/sekojiradajewabij.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000061ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61AC 9796 bytes
SHA-256: 92197971354f92cd4c6c2b1199aa207984dea5f2f15fa61dcf77c4779f87dfff
font_01_sfnt_off00008342.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8342 16140 bytes
SHA-256: 3f83bbfb2e03141a9083badfb1da6e2b1773f9aa6b1ed8f30fc2d392a5ee3553