Malicious PDF — malware analysis report

Static analysis result for SHA-256 efab581ff7ab7aba…

MALICIOUS

PDF

47.9 KB Created: 2020-03-27 12:42:08 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-24
MD5: 941754d4edf1badccc8822d947c307ca SHA-1: f73ba376c2472a832f02dbbb40fbdb9dc813b14e SHA-256: efab581ff7ab7abab149619ce6bbb8f9c13cb8ed62fa33c4506bac8a920d2b68
96 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. These links point to various domains and likely serve to manipulate search engine results or redirect users to malicious content. The document body contains seemingly unrelated text about Samsung toner cartridges, which may be a lure to disguise the true malicious intent. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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://jcitaipei.org/uploads/1/3/0/5/130546294/130546294.html#samsung+clx+3175fw+toner+cartridges PDF link annotation
    • http://bitcoinwood.com/uploads/1/3/0/6/130639559/muboz_ruwevaka_rizekokuriraxi_wuzamasotivesa.pdfIn PDF document text
    • http://mrmacbible.org/uploads/1/3/0/6/130621020/78a4786574.pdfIn PDF document text
    • http://www.taylor--kathryn.rominastiebenphotography.com/uploads/1/3/0/8/130874156/wovubo.pdfIn PDF document text
    • http://littlemissmisfit.com/uploads/1/3/0/6/130604425/2428725.pdfIn PDF document text
    • http://projectxcoaching.com/uploads/1/3/0/7/130739583/97b4e941c3.pdfIn PDF document text
    • http://celticchurchmaui.org/uploads/1/3/0/6/130604780/dufilotagibo.pdfIn PDF document text
    • http://lamaystudios.com/uploads/1/3/0/5/130550881/fegupufap-nixazex.pdfIn PDF document text
    • http://logcrafts1942.com/uploads/1/3/0/6/130604589/199965.pdfIn PDF document text
    • http://kristenblue.org/uploads/1/3/0/8/130874218/40b3046abe111b.pdfIn PDF document text
    • http://srilankacollegeof.org/uploads/1/3/0/5/130539846/28e97d07d8d.pdfIn PDF document text
    • http://www.uk-2-america.com/uploads/1/3/0/2/130288751/gaseni_davevofenanud.pdfIn PDF document text
    • http://moneymakersmethods.com/uploads/1/3/1/4/131408772/xabudadibet_dogezo_pizutura.pdfIn PDF document text
    • http://enchanted-beauty.com/uploads/1/3/0/7/130776394/2969990.pdfIn PDF document text
    • http://cauler.com/uploads/1/3/0/6/130620949/fde24c67fe886d.pdfIn PDF document text
    • http://reveil-corporel.com/uploads/1/3/0/5/130538941/kiketinobofatutede.pdfIn PDF document text
    • http://joshlaw312.com/uploads/1/3/0/4/130436145/lubapusibezuvipabum.pdfIn PDF document text
    • http://mycgexpress.com/uploads/1/3/0/5/130550732/9765546.pdfIn PDF document text
    • http://jaakarro.com/uploads/1/3/0/6/130639385/491cc.pdfIn PDF document text
    • http://autodiscover.ginapeakva.com/uploads/1/3/0/4/130476313/lifuse_gewip_fotobixa.pdfIn PDF document text
    • http://cranfordfishstand.com/uploads/1/3/0/3/130313024/2936992.pdfIn PDF document text
    • http://290pleasantstu313.com/uploads/1/3/0/5/130551898/b23b2.pdfIn PDF document text
    • http://backdooritalian.com/uploads/1/3/0/3/130323672/9627499.pdfIn PDF document text
    • http://totallyquilts.com/uploads/1/3/0/6/130639256/d9a0403a5b50b5.pdfIn PDF document text
    • http://it-ingvild.com/uploads/1/3/1/0/131070166/2198231.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

Related samples 5

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008cef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CEF 9700 bytes
SHA-256: afbf45b40f41073fef288a53b60020164a317122e56e22ea0f72914c33faf6ef

Open this report in the interactive analyzer, or submit your own file for analysis.